Lexan Thermoclear Technical Manual
2016-04-07
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Lexan* Thermoclear*
Multi-wall Polycarbonate Sheet
Technical Manual
Specialty Film & Sheet
sharing our futures
2 SABIC Innovative Plastics
Index
Lexan* Thermoclear* Plus sheet 5
Lexan Thermoclear SunXP sheet 5
Lexan Thermoclear Easyclean sheet 5
Lexan Thermoclear Dripgard* sheet 5
Lexan Thermoclear Solar Control IR sheet 5
Product Availability 5
Lexan* Multi-wall sheet 5
Lexan* Polycarbonate Resin 5
Extension of Lexan Multi-wall sheet Products 6
Lexan Thermoclear Solar Control sheet 6
Lexan Thermoclear Venetian sheet 6
Lexan Thermoclick sheet 6
Lexan Multi-wall sheet Structures 7
Lexan Sheet Availability 8
Lexan Multi-wall sheet Descriptions 9
Lexan Thermoclear sheet Availability 11
Property Profile 14
Lexan Multi-wall sheet 14
Lexan Thermoclear Venetian sheet 15
Lexan Thermoclear Solar Control sheet 15
Lexan Thermoclear Solar Control IR sheet 15
Typical Properties for Lexan Polycarbonate 16
Mechanical Properties 17
Impact Strength 17
Hail Simulation 17
Physical Properties 18
Light Transmission 18
Solar Control Properties 19
Temperature Increase Inside the Building 19
Solar Control 19
Solar Heat Gain 19
Outdoor Weathering Performance 20
UV Protection 20
Typical Values of Thermoclear sheet 20
SABIC Innovative Plastics 3
13 pt praxis light
Index
Various Properties 21
Temperature Resistance 21
Dimensional Stability 21
Continuous use temperature/UL Ratings 21
Fire Performance 21
Weight Factors 21
Sound Insulation 21/22
Thermal Properties 22
Thermal Insulation 22
Overglazing 23
Double Lexan Multi-wall sheet Units 23
Energy Loss Calculations 23
Cold Radiation 24
Cleaning 25
Cleaning 25
Condensation/Chemical Resistance 26
Condensation 26
Chemical Resistance 26
General Guidelines 27
Storage 27
Handling 27
Sawing 27
Drilling 27
Installation 28
Installation 28
Thermal Expansion Allowance 28
Sheet Edge Clamping Conditions 28
Dry Glazing Systems 29
Wet Glazing Systems 29
Sealing Guidelines 30
Edge Sealing 30
Sealing Tape 30
Standard Glazing Conditions 30/31
Specific Glazing Conditions 31
Wind and Snow Loading 32
Dynamic Wind Pressure 32
Pressure Coefficient 32
Snow Loading 32
Computer Aided sheet Engineering 32
4 SABIC Innovative Plastics
Index
Sheet Thickness Criteria 33
Support Conditions 33
Safety Factor 33
Sloped Roofing 33
Site Safety 33
Flat Glazing sheet Thickness 34
Four sides clamped 34
Two sides clamped, glazing bars
parallel with rib structure 35/36
Two sides clamped, glazing bars
90° to rib structure 37
Curved Glazing sheet Thickness 38
Sheet thickness recommendations 38-42
Sheet Glazing Guidelines 43
Do’s and Don’ts 43
SABIC Innovative Plastics 5
Lexan* Multi-wall sheet
Lexan* Thermoclear* Plus sheet (LT2UV)
Lexan* Thermoclear* Plus sheet features as of 4.5mm
thickness a unique 2 side proprietary surface treatment
designed to protect the sheet against the degrading
effects of ultra-violet radiation in natural sunlight.
2 sides UV protected surfaces offers advantage in
economical cutting the sheet in desired shapes and
installation mistakes are minimized since both sheet
surfaces may be faced outwards.
Lexan Thermoclear SunXP sheet (LT2XP)
Lexan Thermoclear SunXP sheet offers next to remarkable
impact strength, high light transmission, light weight,
long term weather resistance and, due to the multi-wall
construction, outstanding thermal insulation properties an
even more unique 2 side proprietary surface treatment
which provides almost total resistance against degradation
caused by UV radiation in sunlight. The entire Lexan
Thermoclear SunXP sheet range carries a Fifteen Year
Limited Written Warranty against discoloration,
loss of light transmission and/or loss of strength due to
weathering.
Lexan Thermoclear Easyclean sheet (LTE)
Lexan Thermoclear Easyclean sheet makes use of a new
and innovative technology platform of self cleaning
properties. The extraordinary hydrophobic coating
on the outside surface reduces the surface tension of
polycarbonate and increases the contact angle of water
to the sheet this causes larger droplets to form and
wash away dirt as the droplets roll down the sheet.
Lexan Thermoclear Easyclean comes standard with a
unique 2 side UV proprietary surface treatment but can
be combined with Dripgard property on the inner side
Product Availability
of the sheet forming a unique combination of having a
Thermoclear sheet with self cleaning properties on the
out side and a surface treatment on the inside which
reduces the formation of condensation droplets to
prevent loss of light transmission.
Lexan Thermoclear Dripgard* sheet (LTD)
Lexan Thermoclear Dripgard sheet, in addition to
the extraordinary properties of standard 2 side UV
resistant Lexan Thermoclear sheet, also features a
specially developed coating on the inner surface which
reduces the formation of condensation droplets. This
property is particularly important in helping to prevent
crop spoilage in commercial greenhouses, by falling
condensation droplets. There is no reduction in light
transmission due to condensation water droplets. It
is the ideal roof glazing material in any application
where water drops are unacceptable. For instance:
greenhouses/verandas/sunrooms/ swimming pool
enclosures/industrial roof glazing.
Lexan Thermoclear Solar Control IR sheet (2UVIR)
Lexan Thermoclear Solar Control IR sheet makes use
of a new and innovative technology platform of solar
energy absorption. The Lexan Thermoclear Solar Control
IR sheets are transparent with a green (GN), blue (BL) or
grey (GY) tint, which blocks near-Infrared light but lets
in high levels of visible light. Lexan Solar Control IR multi
wall sheet offers: high light transmission combined with
low solar transmission, 2 sides unique UV protection,
various structures (2/3/5/6/9 walls, X structures), long-
term weathering resistance and high impact strength.
Lexan* Polycarbonate Resin
Lexan* polycarbonate is a unique engineering thermoplastic which combines a
high level of mechanical, optical and thermal properties. The versatility of this
material makes it suitable for many engineering applications. When extruded in
sheet form, its optical and impact properties in particular render this material an
ideal candidate for a wide range of glazing applications. SABIC Innovative Plastics
has developed a whole range of products to suit the most demanding of these
application needs.
Typical applications include:
• Industrial Roofs and Sidewalls
• Commercial Greenhouses
• Sunroom, Swimming Pool and Conservatory Roofing
• Shopping Center Roofing
• Railway/Metro Station
• Football Stadium Roofing
• Rooflights
6 SABIC Innovative Plastics
Product Availability
Lexan Thermoclick* sheet
Lexan Thermoclick sheet is an X-structured multi wall
polycarbonate panel with proled tongue and groove
connections. This inter-connecting system eliminates
the need for vertical proles, thereby saving costs
and enhancing aesthetics. It is an ideal product to
create ush prole-free facades in different colors and
effects, this combined with the ease of installation
and the variety in colors in particular render this panel
highly suitable for facades and wall cladding. Lexan
Thermoclick sheet has a one side proprietary surface
treatment designed to protect the sheet against the
degrading effects of ultra-violet radiation in natural
sunlight.
Typical applications include:
• Industrial Sidewalls
• Commercial Side walls Greenhouses
• Railway/Metro Station
• Interior decoration
Lexan Thermoclear Solar Control sheet (LTC-SC)
Lexan Thermoclear Solar Control sheet features in
addition to the extraordinary properties of standard
Lexan Thermoclear sheet, a unique and specially
developed Solar Control Coating at the non UV
protected side of the sheet which reduces the heath
build-up beneath the sheet. Despite the reduction of
the heat build-up a high light transmission will remain.
The excellent properties result in an agreeable comfort
level inside the building.
Lexan Thermoclear Venetian sheet (LTC-VEN)
Lexan Thermoclear Venetian grades are members of
the Lexan Thermoclear sheet range of high quality,
multi-wall polycarbonate glazing sheets extruded from
Lexan resin. LTC Venetian is a multiwall sheet which
has been screen printed with white stripes on the non
UV coated side.The white striped side should always
be installed facing inwards, the other side, clearly
identied as protected against UV, being installed facing
outwards. Although the screen printed white stripes are
mainly intended for additional decorative purposes, the
belonging shadow effect results in an improved comfort
level inside the building.
SABIC Innovative Plastics 7
Product Availability
20 mm
18 mm
20 mm
18 mm
16 mm
10 mm
10 mm
16 mm 10 mm
20 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
8 mm
10 mm
10 mm
10 mm
16 mm 10 mm
19 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
4,5 mm
6 mm
4 mm
6 mm
8 mm
8 mm
10 mm
25 mm32 mm
25 mm32 mm
4,5 mm
6 mm
4 mm
6 mm
20 mm
18 mm
20 mm
18 mm
16 mm
10 mm
10 mm
16 mm 10 mm
20 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
8 mm
10 mm
10 mm
10 mm
16 mm 10 mm
19 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
4,5 mm
6 mm
4 mm
6 mm
8 mm
8 mm
10 mm
25 mm32 mm
25 mm32 mm
4,5 mm
6 mm
4 mm
6 mm
20 mm
18 mm
20 mm
18 mm
16 mm
10 mm
10 mm
16 mm 10 mm
20 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
8 mm
10 mm
10 mm
10 mm
16 mm 10 mm
19 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
4,5 mm
6 mm
4 mm
6 mm
8 mm
8 mm
10 mm
25 mm32 mm
25 mm32 mm
4,5 mm
6 mm
4 mm
6 mm
20 mm
18 mm
20 mm
18 mm
16 mm
10 mm
10 mm
16 mm 10 mm
20 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
8 mm
10 mm
10 mm
10 mm
16 mm 10 mm
19 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
4,5 mm
6 mm
4 mm
6 mm
8 mm
8 mm
10 mm
25 mm32 mm
25 mm32 mm
4,5 mm
6 mm
4 mm
6 mm
20 mm
18 mm
20 mm
18 mm
16 mm
10 mm
10 mm
16 mm 10 mm
20 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
8 mm
10 mm
10 mm
10 mm
16 mm 10 mm
19 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
4,5 mm
6 mm
4 mm
6 mm
8 mm
8 mm
10 mm
25 mm32 mm
25 mm32 mm
4,5 mm
6 mm
4 mm
6 mm
Lexan Multiwall sheet structures:
82RS Structure
102RS Structure
103RS Structure
103TS Structure
105RS Structure
103X Structure
163TS Structure
163X Structure
20 mm
18 mm
20 mm
18 mm
16 mm
10 mm
10 mm
16 mm 10 mm
20 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
8 mm
10 mm
10 mm
10 mm
16 mm 10 mm
19 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
4,5 mm
6 mm
4 mm
6 mm
8 mm
8 mm
10 mm
25 mm32 mm
25 mm32 mm
4,5 mm
6 mm
4 mm
6 mm
20 mm
18 mm
20 mm
18 mm
16 mm
10 mm
10 mm
16 mm 10 mm
20 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
8 mm
10 mm
10 mm
10 mm
16 mm 10 mm
19 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
4,5 mm
6 mm
4 mm
6 mm
8 mm
8 mm
10 mm
25 mm32 mm
25 mm32 mm
4,5 mm
6 mm
4 mm
6 mm
166RS Structure
206RS Structure
205RS Structure
256RS Structure
325X Structure
359X Structure
409X Structure
459X Structure
20 mm
18 mm
20 mm
18 mm
16 mm
10 mm
10 mm
16 mm 10 mm
20 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
8 mm
10 mm
10 mm
10 mm
16 mm 10 mm
19 mm
10 mm
10 mm
20 mm
20 mm
20 mm
16 mm
16 mm
6 mm
6 mm
4,5 mm
6 mm
4 mm
6 mm
8 mm
8 mm
10 mm
25 mm32 mm
25 mm32 mm
4,5 mm
6 mm
4 mm
6 mm
62RS Structure
42RS Structure
452RS Structure
509X Structure
20 mm
16 mm
20 mm
20 mm
60 x 20 = 1200 mm
35 mm
60 x 20 = 1200 mm
40 mm
60 x 20 = 1200 mm
45 mm
60 x 20 = 1200 mm
50 mm
1
10 mm
8 mm
8 SABIC Innovative Plastics
Product Availability
Lexan Thermoclick sheet
Lexan Thermoclick sheet system is an impact resistant,
energy-saving multi-wall sheet with proled tongue
and groove connection, joint cover on the outside and
groove for double sided tie on the inside.
Lexan Thermopanel sheet
Lexan Thermopanel sheet is an impact resistant, energy
saving multi-wall transparent sheet with calibrated multi
form side wings matching any insulating corrugated
metal panel. Its optical and impact properties in
particular render this panel a strong candidate as
roofglazing for insulated corrugated metal industrial
buildings.
LTP30A4RS3600
LTP30B4RS3600
LTP30C4RS3600
LTP30D4RS3600
LTP30E4RS3600
1000 mm
945 mm
945 mm
940 mm
945 mm
945 mm
500 mm
523.5 mm
40 mm
Tongue/groove connection UV protected surface
Double sided tie
2
LTC404X4000
3
LTP30D3X3600
LTP30E3X3600
LTP30T3X3600
LTP30V3X3600
LTP30G3X3600
LTP30F3X3600
1000mm-1150mm
1000mm-1150mm
1000mm-1150mm
1000mm-1150mm
1000mm-1150mm
1000mm-1150mm
SABIC Innovative Plastics 9
VENS = Venetian white stripes printed
SC = Solar Control coated
Lexan Thermoclear/Dripgard/Plus sheet
LT(C)(D)(2UV)10(2)(3)(5)(6)(9)(RS)(TS)(X)17
4 = four wall
E, F, G, T, V = Type of wing configuration
(RS)(TS)(X)
RS = Rectangular structure
TS = Tunnel structure
X = X structure
(2)(3)(5)(6)(9)
2 = double wall
3 = triple wall
5 = five wall
6 = six wall
9 = nine wall
2 = double wall
3 = triple wall
5 = five wall
6 = six wall
9 = nine wall
10 sheet thickness in mm
40 sheet thickness in mm
LT(C)(D)(2UV) LTC = Lexan Thermoclear sheet
LTD = Lexan Thermoclear Dripgard sheet
LT2UV = Lexan Thermoclear sheet 2-sides U.V. protected
17 17 = 1.7 kg/m2
Lexan Thermoclear Venetian/Solar Control sheet
LTC 32(2)(3)(5)(6)(9)(RS)(TS)(X)38(VENS)(SC)
(RS)(TS)(X)
RS = Rectangular structure
TS = Tunnel structure
X = X structure
(2)(3)(5)(6)
2 = double wall
3 = triple wall
5 = five wall
6 = six wall
32 Sheet thickness in mm
38 38 = 3.8 kg/m2
(VENS)(SC)
(E)(F)(G)(T)(V)
Lexan Thermoclick sheet
LTC40(4)(X)(4000)
(X) X = X structure
(4)
LTC
(4000) weight in g/m2
30 sheet thickness in mm
Lexan Thermopanel sheet
LTP30(A)(B)(C)(D)(A)(B)(C)(D)(E)(F)(G)(T)(V)4RS(4000)(3600)
(3x)(4RS) 4 = Four wall
RS = Rectangular structure
(A)(B)(C)(D)
LTP LTC = Lexan Thermopanel sheet
(4000)(3600) weight in g/m2
A, B, C, D = type of corrugation
LTC = Lexan Thermoclear sheet
16 sheet thickness in mm
Lexan Thermoclear Solar control IR
2UV(IR)16(2)(3)(5)(6)(9)6RS(27)
6RS
(2)(3)(5)(6)(9)
6 = Four wall
RS = Rectangular structure
2UV(IR) 2UV (IR) = Lexan Thermoclear Solar Control IR
27 27 = 2.7 kg/m2
Product Availability
Description
10 SABIC Innovative Plastics
SABIC Innovative Plastics 11
Table1: Standard Lexan Thermoclear sheet Products
Product code
Standard sheet width in mm.
500 945 980 1000 1050 1100 1150 1200 1250 2100
Lexan Thermoclear Plus sheet
LT2UV42RS800 X
LT2UV452RS10 X X
LT2UV62RS13 X X
LT2UV82RS15 X X
LT2UV83TS17 X X
LT2UV102RS17 X X
LT2UV103RS19 X
LT2UV103TS17 X X X
LT2UV103TS20 X X
LT2UV105RS175 X X X X
LT2UV163TS27 X X
LT2UV163TS28 X X X X X
LT2UV163X29 X X X X
LT2UV163TS28 X X X X
LT2UV163X208 X X X
LT2UV206RS27 X X X
LT2UV205RS33 X
LT2UV205X32 X X X
LT2UV256RS30 X X X
LT2UV325X38 X
LT2UV359X40 X
LT2UV409X43 X
LT2UV459X45 X
LT2UV509X48 X
Standard sheet lengths: 6000-7000mm
Lexan Thermoclear SunXP sheet
LT2XP42RS800 X
LT2XP452RS10 X X
LT2XP62RS13 X X
LT2XP82RS15 X X
LT2XP83TS17 X X
LT2XP102RS17 X X
LT2XP103RS19 X
LT2XP103TS17 X X
LT2XP103TS20 X X
LT2XP103X20 X X X X
LT2XP105RS175 X X
LT2XP163TS27 X X X X X
LT2XP163TS28 X X X X
LT2XP163X29 X X X X
LT2XP166RS27 X X X
LT2XP205RS33 X X X
LT2XP205X32 X
LT2XP206RS30 X X X
LT2XP256RS35 X X X
LT2XP325X38 X
LT2XP359X40 X
LT2XP409X43 X
LT2XP459X45 X
LT2XP509X48 X
Standard sheet lengths: 6000-7000 mm
Product Availability
12 SABIC Innovative Plastics
Product code
Standard sheet width in mm.
500 945 980 1000 1050 1100 1150 1200 1250 2100
Lexan Thermoclear Easyclean sheet
LTE42RS800 X
LTE452RS1000 X X
LTE62RS13 X X
LTE82RS15 X X
LTE83TS17 X X
LTE102RS17 X X
LTE103RS19 X
LTE103TS17 X X
LTE103TS20 X X
LTE103X20 X X X X
LTE105RS175 X X
LTE163TS27 X X X X X
LTE163TS28 X X X X X
LTE163X29 X X X X
LTE166RS27 X X X
LTE205RS33 X X X
LTE205X32 X
LTE206RS30 X X X
LTE256RS35 X X X
LTE325X38 X
LTE359X40 X
LTE409X43 X
LTE459X45 X
LTE509X48 X
Standard sheet lengths: 6000-7000 mm
Lexan Thermoclear Dripgard sheet
LTD62RS13 X
LTD82RS15 X
LTD102RS17 X X
LTD103TS17 X
LTD103RS19 X
LTD163TS28 X X X
LTD163X29 X X
LTD205RS33 X X
LTD256RS35 X X
Standard sheet lengths: 6000-7000 mm
Continued Table1: Standard Lexan Thermoclear sheet Products
Product Availability
SABIC Innovative Plastics 13
Product code
Standard sheet width in mm.
500 945 980 1000 1050 1100 1150 1200 1250 2100
Lexan Thermoclear Solar Control IR sheet
2UVIR62RS13 X X
2UVIR82RS15 X X
2UVIR102RS17 X X
2UVIR105RS175 X X
2UVIR163TS27 X X X X X
2UVIR163X29 X X X X
2UVIR166RS27 X X X
2UVIR205RS33 X X X
2UVIR205X32 X
2UVIR325X38 X
2UVIR359x40 X
2UVIR409x43 X
2UVIR459x45 X
2UVIR509X48 X
Standard sheet lengths: 6000-7000 mm
Lexan Thermoclear Solar Control sheet
LTC62RS13 SC 2100x6000
LTC102RS17 SC 1250x6000 2100x6000
LTC163TS27 SC 980x6000 1250x6000 2100x6000
LTC205RS33 SC 980x6000 1250x6000
LTC256RS35 SC 2100x6000
LTC325X38 SC
1250x3500
1250x4000
1250x4500
1250x6000
Standard sheet lengths: 6000-7000 mm
Lexan Thermoclear Venetian sheet
LTC62RS13 VENS 2100x6000
LTC102RS17 VENS 1250x6000 2100x6000
LTC163TS27 VENS 980x6000 1250x6000 2100x6000
LTC205RS33 VENS 980x6000 1250x6000
LTC256RS35 VENS 2100x6000
LTC325X38 VENS
1250x3500
1250x4000
1250x4500
1250x6000
Standard sheet lengths: 6000-7000 mm
Lexan Thermoclick sheet
LTC404x4000 X
Standard sheet length: 6000-7000 mm
Lexan Thermopanel sheet
LTP30(A,B,C,D,E)4RS3600 X
LTP30(A,B,C,D,E,F,G,T,V)3X3600 X X X X
Standard sheet lengths: 6000-7000 mm
Lexan Thermoclear sheet
LTC42RS800 X
Standard sheet length: 6000-7000 mm
Continued Table1: Standard Lexan Thermoclear sheet Products
Product Availability
14 SABIC Innovative Plastics
Property Profile
Lexan Multi-wall sheet Products
Typical property values for:
Lexan Thermoclear Plus (LT2UV)
Lexan Thermoclear sheet (LTC)
Lexan Thermoclear Dripgard (LTD)
Lexan Thermoclear Easyclean (LTE)
Lexan Thermoclear Sun XP (LT2XP)
Table 2: Lexan Thermoclear sheet Product Selection
walls grade name
gauge (mm)
weight (kg/m2)
rib distance (mm)
ISO # U-value (W/m2 K) 10077
** LT clear 112 (%)
** LT opal white
WH7A092X (%)
*** TST clear 112 (%)
*** TST opal white
WH7A092X (%)
2-Wall LTC42RS800 4 0,8 6 3,96 83 67 83 70
LT2UV452RS10 4,5 1,0 6 3,86 83 67 83 70
LT2UV62RS13 6 1,3 6 3,56 82 66 82 69
LT2UV82RS15 8 1,5 10 3,26 81 64 82 68
LT2UV102RS17 10 1,7 10 3,02 81 64 80 68
3-Wall LT2UV83TS17 8 1,7 10 2,92 73 61 75 66
LT2UV103TS17 10 1,7 10 2,68 73 61 75 66
LT2UV103RS19 10 1,9 20 2,69 74 63 78 69
LT2UV163TS27 16 2,7 20 2,27 74 63 78 69
X-Structure 3-Wall LT2UV103X20 10 2,0 16 2,62 71 62 71 67
LT2UV163X28 16 2,8 16 2,10 67 60 71 64
5-Wall LT2UV105R175 10 1,75 8 2,39 65 60 65 59
LT2UV205RS33 20 3,3 18 1,77 64 55 71 60
6-Wall LT2UV166RS27 16 2,7 20 1,84 61 52 64 60
LT2UV206RS30 20 3,0 20 1,61 61 50 64 61
LT2UV256RS35 25 3,5 20 1,45 58 49 66 63
X-Structure 5-Wall LT2UV205X32 20 3,2 20 1,69 58 50 66 51
LT2UV255X34 25 3,4 20 1,51 57 49 65 54
LT2UV325X38 32 3,8 20 1,32 55 48 65 48
Double X-Structure 9-Wall LT2UV359X40 35 4,0 20 1,19 51 44 53 49
LT2UV409X43 40 4,3 20 1,10 51 43 52 48
LT2UV459X45 45 4,5 20 1,04 50 42 52 47
LT2UV509X48 50 4,8 20 0,99 50 40 52 47
Thermoclick X-Structure
4 Wall LTC404X4000 40 4,0 40 1,41 59 50 64 57
Thermopanel
4-Wall LTP30(A,B,C,D,E)4RS36 30 3,6 20 1.9 68 62 68 68
Thermopanel X-structure
3-Wall
LTP30
(A,B,C,D,E,F,G,V)T3X36 30 3,6 20 1,55 67 63 70 67
# U-values based on SABIC-IP calculated values according ISO 10077 (EN673)
*** LT (Light Transmission) measurements according ISO 9050 (EN 410) on 600x600 mm samples
TST (Total Solar Transmission) measurements according ISO 9050 (EN 410) on 600x600 mm samples
SABIC Innovative Plastics 15
Property Profile
Table 3: Typical properties for Lexan Thermoclear Venetian (LTC VEN) sheet
Sheet thickness mm 10 16 20 25 32
Structure 2RS 3TS 5RS 6RS 5X
Weight kg/m21,7 2,7/2,8 3,3 3,5 3,8
Clear code 112
Light transmission**% 46 41 40 38 36
Total Solar transmission % 49 43 41 39 38
Shading Coefficient 0,65 0,62 0,60 0,65 0,52
U-value W/m2K3,02 2,27 1,77 1,45 1,32
Sound insulation dB 19 21 22 23 24
Hail impact test Bullet 20 mm
Velocity m/sec >21 >21 >21 >21 >21
•U-values based on SABIC-IP calculated values according ISO 10077 (EN673)
**LT (Light Transmission) measurements according ISO 9050 (EN 410) on 600x600 mm samples
#TST (Total Solar Transmission) measurements according ISO 9050 (EN 410) on 600x600 mm samples
“Shading Coefcient (SC): The ratio of the total solar radiation transmitted by a given material to that
transmitted by normal 3 mm glass, whose light transmission is 87%. SC=%TST/87.”
Table 3a: Typical properties for Lexan Thermoclear Solar Control (LTC SC) sheet
Sheet thickness mm 10 16 16 20 25 32
Structure 2RS 3TS 3X 5RS 6RS 5X
Weight kg/m21,7 2,8 2,9 3,3 3,5 3,8
Clear code 112 + SC
Light transmission**% 66 60 56 53 48 47
Total Solar transmission % 54 50 46 44 41 39
Shading coefficient 0,72 0,69 0,68 0,61 0,67 0,58
U-value W/m2K3,02 2,27 2,10 1,77 1,45 1,32
Sound insulation dB 19 21 21 22 23 24
Hail impact test Bullet 20 mm
Velocity m/sec >21 >21 >21 >21 >21 >21
•U-values based on SABIC-IP calculated values according ISO 10077 (EN673)
**LT (Light Transmission) measurements according ISO 9050 (EN 410) on 600x600 mm samples
#TST (Total Solar Transmission) measurements according ISO 9050 (EN 410) on 600x600 mm samples
“Shading Coefcient (SC): The ratio of the total solar radiation transmitted by a given material to that
transmitted by normal 3 mm glass, whose light transmission is 87%. SC=%TST/87.”
Table 3b: Typical properties for Lexan Thermoclear Solar Control IR (2UVIR) sheet (Green color)
Sheet thickness mm 10 16 16 20 25 32
Structure 5RS 3TS 3X 5RS 6RS 5X
Weight kg/m21,75 2,7 2,9 3,3 3,5 3,8
Clear code 112
Light transmission**% 48 55 46 46 41 36
Total Solar transmission % 34 36 29 29 26 23
Shading coefficient 0,56 0,60 0,52 0,53 0,50 0,49
U-value W/m2K2,39 2,27 2,10 1,77 1,45 1,32
Sound insulation dB 20 21 22 22 23 24
Hail impact test Bullet 20 mm
Velocity m/sec >21 >21 >21 >21 >21 >21
•U-values based on SABIC-IP calculated values according ISO 10077 (EN673)
**LT (Light Transmission) measurements according ISO 9050 (EN 410) on 600x600 mm samples
#TST (Total Solar Transmission) measurements according ISO 9050 (EN 410) on 600x600 mm samples
“Shading Coefcient (SC): The ratio of the total solar radiation transmitted by a given material to that
transmitted by normal 3 mm glass, whose light transmission is 87%. SC=%TST/87.”
16 SABIC Innovative Plastics
Property Profile
Table 4: Typical properties for Lexan Polycarbonate Sheet
Property Physical Test method Unit Value
Density ISO 1183 g/cm31,20
Water absorption, 50% RH / 23°C ISO62 % 0,15
Water absorption, saturation / 23°C ISO 62 % 0,35
Mechanical
Tensile stress at yield 50mm/min ISO 527 MPa 60
Tensile stress at break 50mm/min ISO 527 MPa 70
Tensile strain at yield 50mm/min ISO 527 % 6
Tensile strain at break 50mm/min ISO 527 % 120
Tensile modulus 2mm/min ISO 527 MPa 2300
Flexural stress at yield 2mm/min ISO 178 MPa 90
Flexural stress at break 2mm/min ISO 178 MPa 2300
Hardness H358/30 95 ISO 2039/1 MPa 95
Thermal
Vicat Softening Temperature, rate B/120 ISO 306 °C 145
HTD/Ae, 1.8 MPa edgew. 120*1*04/sp=100 ISO 75 °C 127
Thermal conductivity ISO 8302 W/m.°C 0,2
Coeff. of lin. Therm. Exp.extr. 23-80°C ISO 11359-2 1/°C 7.00 E-05
Electrical
Volume resistivity IEC 60093 Ohm.cm 10 E15
These property values have been derived from Lexan resin data for the material used to produce this sheet product.
Variation within normal tolerances are possible for various colors. These typical values are not intended for specication purposes.
If minimum certiable properties are required please contact your local SABIC Innovative Plastics, Specialty Film & sheet
representative. All values are measured at least after 48 hours storage at 23°C/50% relative humidity. All properties are measured on injection
molded samples. All samples are prepared according ISO 294.
SABIC Innovative Plastics 17
Mechanical Properties
Impact Strength
Lexan Thermoclear sheet has outstanding impact
performance over a wide temperature range, -40°C to
+120°C, and also after prolonged outdoor exposure.
Hail Resistance
As a roof glazing material Lexan Thermoclear sheet is
subject to extremes of weather; storms, hail-stones,
wind, snowfalls and ice formation. Under these
conditions, the product is virtually unbreakable and is
able to withstand the subsequent temperature change
to sunny conditions without breaking or buckling.
In a test developed by the Dutch Testing Institute
TNO, samples of Lexan Thermoclear sheet have been
subjected to simulated hail-stones of varying diameters
without signicant damage.
A test sample is clamped into a metal frame and
polymide balls of varying diameters are red at the
surface of the sample using a pressurized airgun.
Table 5: Hail Simulation Test Results
Material Ball diameter
20 mm
Acrylic multi-wall sheet
t=16 mm 7-14 m/s
Float glass t=4 mm 10 m/s
Lexan Thermoclear sheet
t=10 mm >21 m/s
Lexan Thermoclear sheet
t=16 mm >21 m/s
Equilibrium velocity
of hail stones in practice 21 m/s
In practice, hail-stones with a diameter of 20 mm can
reach a terminal velocity of around 21 m/s. Under these
conditions materials such as glass and acrylic fail.
It should be noted that when the glass and the acrylic
are tested their failure characteristics are typically
brittle, whilst the Lexan Thermoclear showed ductile
behaviour: upon impact the ball will leave indentations
but the sheet will not break (See g. 4).
SABIC Innovative Plastics offers a Ten Years Written
Limited Warranty on Lexan Thermoclear sheet covering
loss of strength or impact due to weathering.
4. Represends material failure
at this speed
Polyamide balls
Lexan Thermoclear sheet
Pressurised gun
4
18 SABIC Innovative Plastics
Physical Properties
Light Transmission
The sunlight which reaches the surface of the earth
has a wavelength that ranges between 295 – 2140
nanometres (10E-9 metres). This optical window is
divided into the following sections:
UV-B Middle ultraviolet region 280 – 315 nm
UV-A Near ultraviolet region 315 – 380 nm
Visible light region 380 – 780 nm
Near infra-red region 780 – 1400 nm
Middle infra-red region 1400 – 3000 nm
As shown in g. 5, Lexan Thermoclear sheet has
the highest transmission in the visible light.
Despite transmitting visible light very well, Lexan
Thermoclear sheet is almost opaque to radiation in
the UV and far infra-red region. This useful shielding
property can prevent discolouration of sensitive
materials such as fabrics or other organic materials
placed under or behind Lexan Thermoclear sheet
glazing in, for example, a factory warehouse,
museum or shopping centre.
5. Light Transmission
Spectrum of Lexan
Thermoclear sheet
0
250 300 350 400 500 600 700 800 1000 1400 1800 2200 2600 3000
20
40
60
80
100
UV Visible IR
Wavelength (nanometers)
Transmission %
5
SABIC Innovative Plastics 19
Temperature Increase Inside the Building
Sunlight entering the building heats the air both directly
and through absorption by the framework, furniture,
etc., and is released as infra-red energy. In combination
with the insulating properties of Lexan Thermoclear
sheet, this prevents heat escaping faster than it is
created causing a temperature increase – the so-called
’greenhouse effect’. The temperature can be controlled
by venting, often in combination with specially tinted
Lexan Thermoclear sheet, by Lexan Thermoclear
Venetian Grades and Lexan Thermoclear Solar Control
SC/IR.
Solar Control
Transparent grades of Lexan Thermoclear sheet have
excellent light transmission, between 38 and 83%
depending upon thickness. However, for buildings
in hot climates or with south facing aspects, Lexan
Thermoclear sheet is available in translucent grades
of bronze, grey, blue, green, opal white, Lexan
Thermoclear Solar Control sheet and Lexan Thermoclear
Venetian sheet with screen printed white stripes on
the non UV protected side. These grades signicantly
reduce solar heat build-up, helping to maintain
comfortable interior temperatures.
The specially tinted sheet, Lexan Thermoclear Venetian
sheet and Lexan Thermoclear Solar Control sheet cuts
down the brightness of sunlight to a pleasing level and
reduces air conditioning costs in the summer.
Lexan Thermoclear Solar Control IR (SCIR) sheet does
not signicantly, like most other solar control products,
block or reect sun light but absorbs that part of the
light spectrum which create solar transmission. Lexan
Thermoclear SC/IR is an excellent candidate for those
applications where there is a need for high light
transmission together with a low solar transmission.
Solar Heat Gain
The solar radiation reaching the sheet is reected, absorbed
and transmitted, as shown in g. 6. The greatest proportion
is transmitted and the total solar transmission (TST) is
the sum of the direct transmission (DT) and the inwardly
released part of the absorbed energy (A). Table 6 lists the
solar control properties of the Lexan Thermoclear sheet
range and Lexan Thermoclear Venetian products.
Solar Control Properties
Table 6: Total Solar Transmission# in % Solar Control IR (LTC-IR)
Structure Grade Name
gauge (mm)
weight (kg/m2)
rib distance (mm)
ISO 10077 U
value•(W/m2K)
LT** SC IR Green (%)
LT** SC IR Blue (%)
LT** SC IR Grey (%)
TST# SC IR Green (%)
TST# SC IR Blue (%)
TST# SC IR Grey (%)
SC¶ SC IR Green (%)
SC¶ SC IR Blue (%)
SC¶ SC IR Grey (%)
2-Wall 2UVIR6/2RS13 6 1,3 6 3,56 66 60 0,69
2UVIR8/2RS15 8 1,5 10 3,26 65 61 0,70
2UVIR10/2RS17 10 1,7 10 3,02 65 52 20 60 58 42 0,69 0,67 0,48
3-Wall 2UVIR16/3TS27 16 2,7 20 2,27 55 36 52 49 0,60 0,56
3-Wall X-structure 2UVIR16/3X29 16 2,9 16 2,10 46 29 22 45 32 30 0,52 0,37 0,34
5-Wall 2UVIR10/5RS175 10 1,75 8 2,39 48 48 0,56
2UVIR20/5RS33 25 3,3 18 1,77 46 46 0,53
5-Wall X-structure 2UVIR20/5X32 25 3,2 20 1,69 24 37 0,51
2UVIR32/5X38 32 3,8 20 1,32 36 20 12 42 35 30 0,49 0,40 0,34
6-Wall 2UVIR16/6RS27 16 2,7 20 1,84 42 45 0,52
•U-values based on Sabic calculated values according ISO 10077 (EN673)
**LT (Light Transmission) measurements according ISO 9050 (EN 410) on 600x600 mm samples
#TST (Total Solar Transmission) measurements according ISO 9050 (EN 410) on 600x600 mm samples
‘‘¶Shading Coefcient (SC): The ratio of the total solar radiation transmitted by a given material to that transmitted by normal 3 mm glass,
whose light transmission is 87%. SC=%TST/87.”
Exterior
Solar
intensity
Reflection (R)
Radiation to
the outside
Interior
Direct solar
transmission (DT)
Radiation
to the inside
*Total solar
transmission (TST)
Absorption (A)
*
6
200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
0 5 10 15 20 25 30 35 40 45 50
80
70
60
50
40
30
20
10
0
Wavelength
Minutes (m)
9ºC Difference
Harmful UV Visible Light Heat-Generating Near IR
Light Transmission of 16mm sheets
with identical 0.44 shading coefficient
Internal Temperature Reduction - Comparison
Transmission (%)
Lexan* Solar Control Sheet 55% LT
Standard Sheet
Opal 48% LT
Lexan* Solar Control Sheet
35
30
25
20
15
10
5
0
Delta Temperature (ºC)
7
200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
0 5 10 15 20 25 30 35 40 45 50
80
70
60
50
40
30
20
10
0
Wavelength
Minutes (m)
9ºC Difference
Harmful UV Visible Light Heat-Generating Near IR
Light Transmission of 16mm sheets
with identical 0.44 shading coefficient
Internal Temperature Reduction - Comparison
Transmission (%)
Lexan* Solar Control Sheet 55% LT
Standard Sheet
Opal 48% LT
Lexan* Solar Control Sheet
35
30
25
20
15
10
5
0
Delta Temperature (ºC)
20 SABIC Innovative Plastics
Outdoor Weathering Performance
WARRANTY
SABIC Innovative Plastics
offers a Ten Year Written
Limited Warranty on Lexan
Thermoclear sheet covering
discolouration, loss of light
transmission and loss of
impact strength due to
weathering as more
specifically defined in such
warranty. Please consult your
local distributor or SABIC
Innovative Plastics Sales
Office for more details.
UV Protection
Solar radiation has a particularly harmful effect upon
polymeric materials initiating degradation by causing
supercial surface crazing. These crazes become sites
for further erosion from water, dust, chemicals, etc. The
degree to which these conditions affect the polymer
depend largely upon environmental parameters such as
geographical location, altitude, seasonal variations, etc.
Lexan Thermoclear sheet has on one or both sides
a unique proprietary UV-protected surface, giving
excellent resistance to outdoor weathering. This unique
protection ensures long-term optical quality under
intensive UV exposure, and maintains the superior
toughness of the polycarbonate material in comparison
to other thermoplastic glazing.
Typical Values of Thermoclear sheet
Research into the long-term effects of weathering on
glazing materials is basically focused upon measuring
product performance through material property
changes, typically mechanical strength, impact
resistance, colour retention, transparency, etc.
Under ISO 4892, a test has been developed using high
intensity Xenon lamps to simulate natural sunlight.
Together with UV lters and programmable rain cycles,
the test is able to simulate natural conditions.
Accelerated weathering tests have been carried out on
Lexan Thermoclear sheet by SABIC Innovative Plastics.
Using in-house Xenon 1200 apparatus, these tests
were carried out according to ISO 4892. However,
even tougher demands were placed on the material by
removing the UV lter for 1/6 of the cycle.
Placed within this environment, Lexan Thermoclear
sheet was exposed to 5,000 hours. Experience with
the Xenon test equipment indicates that this relates
to 15 years’ natural exposure in a moderate European
climate. Following the test the optical properties of light
transmission and yellowness index were measured and
compared with an un-aged sample.
SABIC Innovative Plastics 21
Temperature Resistance
The heat build-up of glazing materials can be seen as a
function of the solar energy absorption of the glazing
material and the solar intensity.
In areas with intense sun radiation, and when high
energy absorbing tinted glazing is installed, heat build-
up of the glazing can be considerable. Calculations and
actual measurements on installed Lexan Thermoclear
sheet in several projects throughout Europe have shown
that sheet surface temperatures of 100°C can exist.
Dimensional Stability
Lexan Thermoclear sheet is characterised by its excellent
retention of impact strength and stiffness at elevated
temperatures, even over an extended period. Lexan
Thermoclear sheet retains 85% of its room temperature
exural modulus at 80°C.
Continuous use Temperature
UL Ratings
The U.S.A. Underwriters Laboratories continuous-
use temperature rating can be considered as a
reliable indicator of a thermoplastic’s long-term high
temperature performance. The most important
properties of the thermoplastic are tested at various
temperatures. Test results are extrapolated over a
period of 10 years and no property may lose more
than 50% of its original value. Table 7 outlines the UL-
continuous use temperatures of typical thermoplastic
glazing materials.
Various Properties
8. Dimensional stability.
Flexural modulus in
N/mm2 x100
Table 7: UL Temperature Ratings UL746B
Underwriters Laboratories
Continuous-use
Temperature
Rating
Softening
Temperature
Lexan
polycarbonate 100°C 145°C
Acrylic 50°C 100°C
PVC 50°C 70°C
Table 8: Weight
Lexan Thermoclear
sheet
Thickness
mm
Weight
kg/m2
4 0.8
4.5 1.0
6 1.3
8 1.5
10 1.7 - 2.0
16 2.7 - 2.9
20 3.0 - 3.3
25 3.4 - 3.5
32 3.8
35 4,0
40 4,3
45 4,5
50 4,8
Lexan Thermoclick sheet
40 4,0
Lexan Thermopanel sheet
30 3,6
Lexan Thermoclear sheet has a continues-use
temperature of 100°C. At the other end of the scale
the minimum continues-use temperature has been set
at -40°C. However, using Lexan Thermoclear sheet at
lower temperatures is possible since the embrittlement
temperature is as low as -110°C.
Fire Performance
Lexan Thermoclear sheet has good re behaviour
characteristics, and receives high ratings in several major
European re performance tests including EN13501.
More detailed information is available from your local
SABIC Innovative Plastics Service Centre or authorised
dealer.
Weight Factors
Lexan Thermoclear sheet is an ideal replacement
for the more traditional glazing materials. It is safe
and easy to handle, cut and install and is virtually
unbreakable. Its light weight offers signicant savings
in terms of transportation, handling and installation.
When compared with 6 mm wired glass, 10 mm Lexan
Thermoclear sheet offers weight savings of more than
85%.
Lexan Thermoclear sheet has shown in many
applications that its lightness and ease of handling have
contributed to signicant savings in overall installation
costs.
Sound Insulation
The sound insulation characteristics of a material are
largely pre-determined by its stiffness, mass and physical
construction. In accordance with DIN 52210-75, the
maximum obtainable sound transmission class for a
particular thickness of Lexan Thermoclear sheet is listed
below.
30
25
20
15
10
5
0
Temperature C
o
-25 0 25 50 75 100
Lexan
PVC PMMA
Flexural modulus in N/mm x 100
2
8
22 SABIC Innovative Plastics
Thermal Properties
Thermal Insulation
The multi-wall structure of Lexan Thermoclear sheet
offers signicant advantages where thermal insulation
is a major consideration. The hollow form provides
excellent insulation characteristics with heat losses
signicantly lower than mono-wall glazing materials.
Heat loss is normally referred to as the U-value, which is
the amount of energy transmitted through a material
per square metre of glazing area and per degree
temperature difference. It is expressed in terms of
W/m2K.
Table 9: Sound Reduction Values
Lexan Thermoclear
sheet
Thickness
mm
Sound
Reduction dB
415
4.5 16
618
818
10 19
16 21
20 22
25 23
32 23
35 24
40 25
45 26
50 26
Lexan Thermoclick sheet
40 21
Lexan Thermopanel sheet
30 22
Sound reduction values based on Sabic-IP calculated values according
DIN 52210-75
Table 10: Material U-values (W/m2K)
Lexan Thermoclear
sheet Thickness mm U-value
4.5 (2RS) 3,96
6 (2RS) 3,56
8 (2RS) 3,26
10 (2RS) 3,02
10 (3RS) 2,69
10 (3TS) 2,68
10 (3X) 2,62
10 (5RS) 2,39
16 (3TS) 2,27
16 (3X) 2,10
16 (6RS) 1,84
20 (5X) 1,77
20 (5RS) 1,69
20 (6RS) 1,61
25 (5X) 1,51
25 (6RS) 1,45
32 (5X) 1,32
35 (9X) 1,19
40 (9X) 1,10
45 (9X) 1,03
50 (9X) 0,99
Lexan Thermoclick sheet
40 (4X) 1,41
Lexan Thermopanel sheet
30 A,B,C,D
(4RS/3.6) 1.90
30 A,B,C,D,F,G,V,T
(3X/3.6) 1.74
U-values based on Sabic-IP calculated values according ISO 10077
(EN673)
SABIC Innovative Plastics 23
Overglazing
Installing Lexan Thermoclear sheet in front or behind
the existing glazed window provides additional energy
savings. For effective insulation, the best results are
obtained when leaving a 20-50 mm air gap between
the existing glazing and the Lexan multi-wall sheet.
Double Lexan Multi-wall sheet Units
Extremely low U-values can be obtained by double-
glazed multi-wall Lexan sheet units. A combination
of Lexan Thermoclear sheet outside and Lexan
Thermoclear sheet inside, with an air gap of 20-50
mm will dramatically reduce the heat loss factor in
applications such as curved and pitched roof lights.
Energy Loss Calculations
The need to reduce energy consumption, and therefore
energy costs, is one of the highest priorities in any
business today. Substantial savings of more than 50%
are possible when installing Lexan Thermoclear sheet
instead of mono-layer glass. When calculating according
to the guidelines given in the DIN standard 4701, an
average annual saving of between 0.9 - 1.3 litres of
oil or 1.0 - 1.5 m3 of gas per m2 of glazing area will be
obtained by decreasing the U-value by 0.1 W/m2K.
Table 13 shows the minimum and maximum amount of
savings of fuel consumption per m2 glazing area when
the U-value is decreased by varying amounts.
Calculation example
Annual fuel saving when glass is replaced by Lexan
Thermoclear sheet.
Data:
4 mm glass, U-value - 5.8 W/m2K
10 mm Lexan Thermoclear sheet, U-value – 3.0 W/m2K
U-value difference: 5.8 - 3.0 = 2.8 W/m2K. As shown
in Table 12, the minimum and maximum amount of
annual fuel savings per m2 glazing area are:
25.2 – 36.4 litres of oil
28 – 42 m3 of gas
Thermal Properties
Table 11: Overglazing
Glass
Thickness mm
Air space
mm
Thermoclear sheet
Thickness mm
U-value
W/m2K
4 20-50 6(2RS) 2.17
4 20-50 8(2RS) 2.09
4 20-50 10(2RS) 1.97
4 20-50 16(3TS) 1.69
Installing Lexan Thermoclear sheet in front or behind the existing glazed window provides additional energy
savings. For effective insulation, the best results are obtained when leaving a 20-50 mm air gap between the
existing glazing and the Lexan multi-wall sheet.
Table 12: Double Lexan Multi-wall sheet Units
Thermoclear
sheet outside
Air gap
mm
Thermoclear sheet
inside
U-value
W/m2K
6(2RS) 20-50 4.5(2RS) 1.83
8(2RS) 20-50 4.5(2RS) 1.78
10(2RS) 20-50 6(2RS) 1.61
16(3TS) 20-50 6(2RS) 1.42
16(3TS) 20-50 8(2RS) 1.39
20(5RS) 20-50 6(2RS) 1.19
20(5RS) 20-50 8(2RS) 1.16
Table 13
U-value
difference
W/m2K
Annual saving per m2 glazing area
Oil - Litres Gas - m3
0.1 0.9-1.3 1-1.5
0.2 1.8-2.6 2-3
0.3 2.7-3.9 3-4.5
0.4 3.6-5.2 4-6.0
0.5 4.5-6.5 5-7.5
0.6 5.4-7.8 6-9.0
0.7 6.3-9.1 7-10.5
0.8 7.2-10.4 8-12
0.9 8.1-11.7 9-13.5
1 9-13 10-15
1.2 10.8-15.6 12-18
1.4 12.6-18.2 14-21
1.6 14.4-20.8 16-24
1.8 16.2-23.4 18-27
2.0 18-26 20-30
2.2 19.8-28.6 22-33
2.4 21.6-31.2 24-36
2.6 23.4-33.8 26-39
2.8 25.2-36.4 28-42
3.0 27-39 30-45
3.2 28.8-41.6 32-48
3.4 30.6-44.2 34-51
3.6 32.4-46.8 36-54
3.8 34.2-49.4 38-57
4.0 36-52 40-60
Note:
The exact amount of annual fuel savings is strongly dependent upon the building
type, location and regional environmental conditions. Local authority engineering
departments usually have ofcial data relating to average temperature differences
throughout the year.
24 SABIC Innovative Plastics
Cold Radiation
The excellent insulation properties of Lexan
Thermoclear sheet will also contribute to a reduction in
the radiation of cold into the building.
The lower the U-value, the higher the inner sheet
surface temperature will be maintained during the
winter season.
Fig. 9 presents an example of the temperature prole
through 6 mm Lexan Thermoclear sheet when the
outside temperature is -10°C and the inside building
temperature is +20°C.
9. Temperature process
through Lexan Thermoclear
sheet at low outside
temperature.
10. Comparisation of Lexan
Thermoclear sheet with
single glazed glass under
the same conditions.
The multi-wall construction creates an air space which
results in a moderate sheet surface temperature.
Under the conditions indicated, the inner sheet surface
temperature remains far above zero so that there is no
cold radiation to the inside of the building.
Fig. 10 compares Lexan Thermoclear sheet with single
glazed glass under the same conditions. The inside glass
surface temperature is well below zero, which means
that cold radiation will negatively inuence the overall
building temperature and will affect the comfort level
near the windows.
Thermal Properties
910
+5,96°C
+20°C
-4,32°C
-10°C
thickness: 6 mm
U-value: 3,6 W/m
2
K
Inside Outside
0123456
Single glass 4mm
Thermoclear 6mm
Glazing inside surface temperature °c
Outside temperature: -10°C
Inside temperature: 20°C
-5
0
5
10
15
20
U-value W/m2K
SABIC Innovative Plastics 25
Lexan* sheet Cleaning Recommendations
These cleaning recommendations apply to all Lexan
polycarbonate sheet products, including, but not limited
to, Lexan solid sheet and signs, Lexan coated Margard*
sheet and Lexan multiwall sheet.
Periodic cleaning using correct procedures can help to
prolong service life. For cleaning, it is recommended
that the following instructions be adhered to:
Cleaning Procedure for Small Areas – Manual
1. Gently wash sheet with a solution of mild soap and
lukewarm water, using a soft, grid-free cloth or
sponge to loosen any dirt or grime.
2. Fresh paint splashes, grease and smeared glazing
compounds can be removed easily before drying
by rubbing lightly with a soft cloth using petroleum
ether (BP65), hexane or heptane. Afterwards, wash
the sheet using mild soap and lukewarm water.
3. Scratches and minor abrasions can be minimized by
using a mild automobile polish. We suggest that a
test be made on a small area of Lexan sheet with the
polish selected and that the polish manufacturer’s
instructions be followed, prior to using the polish on
the entire sheet.
4. Finally, thoroughly rinse with clean water to remove
any cleaner residue and dry the surface with a soft
cloth to prevent water spotting.
Cleaning Procedure for Large Areas - Automated
1. Clean the surface using a high-pressure water cleaner
(max. 100bar or 1,450psi) and/or a steam cleaner.
We suggest that a test be made on a small area, prior
to cleaning the entire sheet.
2. Use of additives to the water and/or steam should be
avoided.
Other Important Instructions for All Lexan sheets:
• Never use abrasive or highly alkaline cleaner on Lexan
polycarbonate materials.
• Never use aromatic or halogenated solvents like
toluene, benzene, gasoline, acetone or carbon
tetrachloride on Lexan polycarbonate materials.
• Use of incompatible cleaning materials with Lexan
sheet can cause structural and/or surface damage.
• Contact with harsh solvents such as methyl ethyl
ketone (MEK) or hydrochloric acid can result in surface
degradation and possible crazing of Lexan sheet.
• Never scrub with brushes, steel wool or other abrasive
materials.
• Never use squeegees, razorblades or other sharp
instruments to remove deposits or spots.
• Do not clean Lexan polycarbonate in direct sunlight
or at high temperatures as this can lead to staining.
• For all mentioned chemicals consult the
manufacturer’s material safety datasheet (MSDS) for
proper safety precautions.
Additional Important Considerations for
Multiwall, Corrugated and Sign sheet:
• Cleaners and solvents generally recommended for
use on polycarbonate are not necessarily compatible
with the UV-protected surfaces of Lexan multiwall,
corrugated and sign polycarbonate materials.
• Do not use alcohols on the UV-protected surfaces of
Lexan sheet.
• Never clean the Dripgard surface of Lexan multiwall
and corrugated sheets.
26 SABIC Innovative Plastics
Condensation/Chemical Resistance
Condensation
Condensation is formed when moisture in the
atmosphere changes back to water as it comes into
contact with a surface at a temperature below the
‘dewpoint’ of the surrounding air.
Water droplets on the surface of the glazing reduce
light transmission, and, if they fall, can spoil plants or
damage sensitive goods and equipment underneath.
Lexan Thermoclear Dripgard sheet has a special
one-sided coating that inhibits the formation of
condensation droplets. The coating lowers the surface
tension and the droplets form a thin layer of water over
the whole surface of the sheet.
When the sheet is correctly installed, this thin,
transparent water lm runs off the sheet surface into
the prole drainage system without falling to the
ground and without affecting the light transmission
values of the glazing.
Fig. 11 shows a typical condensation prediction chart
showing the relationships between internal and external
temperatures, relative humidity and the U-value. The
dotted lines on the chart illustrate clearly how glass
with a high U-value is more prone to condensation than
Lexan Thermoclear Dripgard sheet.
Example:
Chemical Resistance
Lexan Thermoclear sheet has been successfully used in
combination with many building materials and glazing
compounds. Taking into account the complexity of
chemical compatibility, all chemicals which come into
contact with polycarbonate should always be tested in
the particular application. For sheet products, the most
common materials are sealants, gaskets and the various
cleaning media. Chemical compatibility testing is an
ongoing process at SABIC Innovative Plastics and many
standard products have already been tested.
A complete list of recommended cleaners, gaskets and
sealants is available upon request. However, a shortened
list of some of the more common compounds is shown
below.
When using glazing compounds it is essential that the
sealant system accepts a certain amount of movement
to allow for thermal expansion, without loss of adhesion
to the frame or sheet. Momentive Silicones’ sealants are
generally recommended for use with Lexan Thermoclear
sheet, see Table 14. It is strongly advised when using
other sealing compounds to check compatibility before
use.
11. Condensation
Prediction Chart showing
the telationships between
internal and external
temperatures, relative
humidity and the U-value
Inside temperature: 20°C
Outside temperature: -10°C
Condensation will occur on:
A Glass U-value 5.8 w/m2K at a humidity content of: 32%
B LTC 6 mm U-value 3.56 w/m2K at a humidity content of: 50%
C LTC 20 mm U-value 1.8 w/m2K at a humidity content of: 68%
Table 14: Recommended Sealants
Sealant Supplier
Silpruf Momentive
MultiSil Momentive
Table 15: Recommended Gasket Systems
Gasket Type* Supplier
EPDM
Chloropene, RZ4-35-81 Helvoet
EPDM
4330, 4431, 5530, 5531 Vredestein
EPDM
3300/670, 64470 Phoenix
* more grades available
Compatible Neoprene, EPT or EPDM rubbers with
an approximate Shore Hardness of the A65 are
recommended, and compatibility reports for different
rubber types are available upon request.
In case of doubt about any aspect of the chemical
compatibility of the Lexan Thermoclear sheet range,
always consult your nearest SABIC Innovative Plastics
Sales Ofce for further advice.
11
40
30
20
10
0
-10
- 0.5
100
80
60
40
20
0
C
B
A
20
10
0
30
-10
0
10
20
30
U-value (W/m2K)
U-value (W/m2K)
Outside temperature (°C)
-20
-30
-40
2.3
3.0
3.8 5 6
1
Inside temperature (°C)
Relative humidity content (%)
SABIC Innovative Plastics 27
General Guidelines
Storage
Lexan Thermoclear sheet should be stored and
protected against atmospheric inuences like sun, rain,
etc. Lexan Thermoclear sheets of the same length
should be stacked together horizontally or, if different
lengths, graded with the longest sheet at the bottom
of the stack in order to avoid unsupported overhangs.
The stacks should be supported on timber bearers and
should not be placed where they can be walked on or
driven into.
Handling
As with all glazing materials, care should be exercised
when handling and transporting Lexan Thermoclear
sheet in order to prevent scratches and damage to
sheet edges. Each sheet is packaged as follows to
minimise the risk of these problems:
• The top face is covered with printed masking. Lexan
Thermoclear (1UV) and Dripgard masking have a blue
print, Lexan Thermoclear Plus (2UV) has a red print,
Lexan SunXP and Easyclean have a green printed
masking.
• The bottom face has a neutral masking.
• The edges of the sheets have colored tape on them,
blue for Lexan Thermoclear (1UV), yellow for Lexan
Thermoclear Plus (2UV), green for Dripgard, purple for
Easyclean and red tape for SunXP.
• The sheet should be kept in their packaging until
immediately prior to installation.
Sawing
Lexan Thermoclear sheet can be cut easily and accurately
with standard workshop equipment. This includes common
circular, hand and hacksaws. Saw dust should be blown
out of the channels using dry compressed air. Circular
saws should have ne-toothed panel blades. When hand
or power hacksaws are used, the sheet should be clamped
to the worktable to avoid undesirable vibration. To avoid
scratching the surface do not remove the protective
masking. When nished the edges of the Lexan Thermoclear
sheet should be free of notches and swarf build-up.
With the smaller wall section Lexan Thermoclear sheet,
(up to 10 mm), it is possible to cut the sheet with a
knife. However, it is important that the knife is sharp.
Drilling
Holes can be drilled by a power drill using standard high
speed steel twist drills or drills with an angular wedged
bid. When drilling, support should be given immediately
beneath the drill to avoid vibration. Very clean holes are
easily obtained. The use of liquid cooling media is not
recommended.
12
28 SABIC Innovative Plastics
Installation
Installation
Glazing with Lexan Thermoclear sheet should be
considered a nishing operation and seen as the nal
step in the completion of an application.
Thermal Expansion Allowance
Since Lexan Thermoclear sheet has a greater coefcient
of linear thermal expansion than that of traditional
glazing materials, care should be taken to allow for free
expansion of the sheet to prevent bowing and internal
thermal stress.
Sheet Edge Clamping Conditions
The following recommendations apply to installations
involving both at glazing, i.e. vertical, horizontal or
inclined, and curved glazing. It is extremely important
when installing Lexan Thermoclear sheet that the edges
are correctly clamped, whether the application involves
wet or dry glazing conditions.
A cover plate, or glazing bead, with rubber gaskets or
silicone sealant, hold the sheet in place and create a
water-tight seal. In both cases there must be sufcient
clearance to allow for thermal expansion of the sheet. It
is also important that the edge of the sheet is engaged
for a minimum of 20 mm into the glazing frame with
at least one rib located in the clamping area. See g. 14
and 15.
13. This figure shows Thermal
Expansion Allowance at
various sash dimensions
14, 15. Indicates correct#
installation when
clamping the sheet
in a profile
Allowance for thermal expansion must be made for
both the length and the width of the Lexan Thermoclear
sheet. The recommended allowances for various sheet
dimensions are outlined in the graph.
The sheet must be trimmed to allow for at least as
much as the indicated thermal expansion.
In general: Thermal expansion of the sheet is
approximately 3 mm per linear metre
at a delta of 50°C.
In general the total rebate depth for each prole should
include a minimum of 20 mm sheet edge engagement
and an allowance for thermal expansion.
# Due to the rib geometry of Lexan Thermoclear sheet, at a
thickness of ≥16 mm, additional precautions should be taken.
In this case it is important that the sheet is cut such that at least
one rib is located in the centre of the rebate.
Sash dimension in mm
Total thermal expansion in mm
500 1000 1500 2000 2500 3000 3500 4000 4500 5000
0
1
2
3
4
5
6
8
10
12
7
9
11
13
14
15
13 14
sheet edge
engagement ± 20 mm
15
SABIC Innovative Plastics 29
Installation
Dry Glazing Systems
This selection illustrates some glazing proposals using
commercially available proles which have proven to
be successful in combination with Lexan Thermoclear
sheet. Situations may occur where sheet expansion
exceeds sealant limitations and, often for aesthetic
reasons, this type of ‘dry’ glazing system provides an
ideal solution.
The advantage of dry systems is that the rubber
gaskets snap-t into the glazing strips which then allow
free movement of the sheet during expansion and
contraction. See g.16 and 17.
WARNING!
Do not use PVC gaskets.
Due to the migration of additives from soft PVC, the
Lexan Thermoclear sheet can be chemically affected
resulting in surface cracks or even sheet breakage.
A wide range of easy to use glazing bars and xing
accessories, designed specically for glazing Lexan
Thermoclear sheet, is available from most of the
approved Lexan Thermoclear sheet distributors and
specialised installers.
16-17-18-19. Different
installation
profile examples
Wet Glazing Systems
This type of installation system is mainly used in small
domestic type applications, car ports, warehouses,
conservatories and other glass replacement situations.
With standard metal proles or wooden sections,
in combination with glazing tapes and glazing
compounds, many different congurations are possible.
See g.18 and 19.
When using glazing compounds it is essential that the
sealant system accepts a certain amount of movement,
to allow for thermal expansion, without loss of adhesion
to the frame or sheet. Silicone sealants are generally
recommended for use with Lexan Thermoclear sheet,
but it is strongly advised when using sealing compounds
to check compatibility before use.
Care should be taken not to use amine nor benzamide
curing silicone sealants, which are not compatible with
Lexan sheet and result in crazing, particularly when
stress is involved. See page 17, Table 5, for suitable
sealant.
16
17
Thermal expansion allowance
min. 20 mm
Glazing filler tape
Silicone sealant
18
Metal frame Glazing filler tape
Silicone sealant
19
30 SABIC Innovative Plastics
Edge sealing
In all cases Lexan Thermoclear sheet should be
mounted with the ribs running downwards to assist
condensation water drainage. Algae growth, in the
form of a green deposit inside the sheet channels, may
occasionally be a problem. It is the result of permanent
condensation inside the channels due to particular
temperature conditions.
Since moisture build-up and dust/insect contamination
inside the channels can be a major problem, one of the
most important aspects of installation is edge sealing,
particularly of the open-ended channels. There are
several techniques that can be adopted to signicantly
reduce contamination, the choice depending largely on
the prevailing environmental conditions.
Sealing Tape
It should be noted that the tape delivered on
Thermoclear sheet is for protection, during
transportation and storage, only and is not an
impermeable sealing/ installation tape. This tape should
be replaced prior to installation with a tape as described
below.
Before taping, approximately 50 mm of the masking
should be removed from all sheet edges. The remaining
masking should be removed only when installation is
completed.
• The tape should have good weathering resistance,
without loss of long-term adhesion or mechanical
strength.
• The tape should have good resistance to tearing and
other damage during installation and handling.
• In close co-operation with the company Multifoil, an
anti-dust impermeable tape G3600 and an anti-dust
venting tape AD3400/AD4500 have been developed.
Multifoil will provide within Europe a 10 Year
Guarantee on the operation of the tapes.
MULTIFOIL B.V.
Laanakkerweg 12
4131 PA Vianen
The Netherlands
tel. +31 347 366 717
fax. +31 347 366 718
Sealing Guidelines
The following Guidelines are recommended to minimise
sealing and contamination problems:
• Ensure that all sheet edges are smooth and rounded
before applying the tape.
• All channels should be blown free of dust before sealing.
• Ensure tape is completely covered by glazing proles,
ashings, end closures, etc. No tape should be left
exposed when installation is complete.
• Replace any damaged tape before nal installation.
• Recommended sealing tapes for glazing Lexan
Thermoclear sheet are available from most approved
Lexan Thermoclear distributors and specialised installers.
Standard Glazing Conditions
In standard glazing conditions, the top end channels are
sealed with an impermeable tape and the bottom end
channels are sealed with a perforated lter tape.
See g. 20 and 21.
An additional ‘U’ prole can be installed to cover the
perforated bottom tape and to facilitate condensation
drainage. (See g. 24 and 25).
Sealing Guidelines
Impermeable tape
Venting tape
‘U’ profile
20
G3600
AD3400/AD4500
21
SABIC Innovative Plastics 31
In semicircular barrel vaults both channel ends should
be sealed with perforated lter tape e.g. Multifoil AD
3400. See g. 22
Care should be taken to provide a clearance between
both the sheet edges and the sash platform to allow for
condensation drainage. See g. 23 and 24.
In general the total rebate depth for each prole should
include a minimum of 20 mm sheet edge engagement
and an allowance for thermal expansion.
25. Impermeable tape
on both sides
Specific Glazing Conditions
In certain environments, it is recommended that both
channel ends are sealed with an impermeable tape.
See g. 25.
These environments include:
• Extremely dusty environments (sawmills – welding-
stations, etc)
• Low humidity/dry conditions (shopping centres –
warehouses, etc)
• Limited temperature difference between the interior
and exterior (football stadia – metro/railway station
roong, etc)
Sealing Guidelines
AD3400/AD4500
22
25
Venting tape
Silicone
Clearance to allow
condensation water drainage
23
‘U’ profile
Venting tape
Venting tape
Hole
10mm
distance
10mm
distance
Clearance to allow
condensation
water drainage
Clearance to allow
condensation
water drainage
alu. ‘U’ profile
24
32 SABIC Innovative Plastics
Wind and Snow Loading
Dynamic Wind Pressure
The wind speed is used to determine the actual loading
upon the glazing panels. In mathematical terms, the
pressure loading is calculated by multiplying the square
of the design wind speed by 0.613.
q = KV2
where q = dynamic wind pressure in N/m2
K = 0.613
V = design wind speed in metres/second
Table 16: Values of q in SI units (N/m2)
wind
speed m/s
wind
pressure N/m2
10 61
15 138
20 245
25 383
30 552
35 751
40 981
45 1240
50 1530
55 1850
60 2210
65 2590
For glazing projects with an unusual loading condition, please contact
your local SABIC Innovative Plastics Sales Ofce
The Beaufort scale transforms wind into static pressure:
WIND light moderate strong storm
Speed (km/h) 20 40-60 80-100 120-140
Speed (m/sec) 6 11-17 22-28 33-39
Static pressure (N/m2) 20 80-170 300-480 680-950
Pressure Coefficient
To allow for local uctuations in the acceleration/
deceleration of the wind by building or glazing geometry,
it is necessary to include an appropriate pressure
coefcient.
Determine pressure coefcients requires knowledge of:
• Form and type of building
• Height of glazing
• Shape of glazing e.g.
- Flat vertical
- Inclined roong
- Curved glazing
The wind loading is obtained by multiplying the
dynamic wind pressure by the pressure coefcient.
The total wind loading can be positive indicated a wind
pressure force or negative indicating a wind suction
load. Detailed pressure coefcient values can be found
in the appropriate national building norms.
Snow Loading
Snow loading on roof glazing can be considered
equivalent to a vertically, uniformly distributed load,
acting per m2 of the horizontal projection of the glazing.
A roof made of Lexan Thermoclear sheet does not
permit immediate melting of the snow, due to its
excellent thermal insulation, and therefor the load
produced by the snow must be carefully taken into
consideration.
Snow-indicative weights per centimetre of height
fresh snowfall - 0.8-1.9 kg/m2 per cmh.
wet snowfall - 2-8 kg/m2 per cmh.
Snow loading factors can be obtained from the
appropriate local building norm.
Computer Aided sheet Engineering
A computer aided design programme has been
developed especially for large glazing projects, or
projects with an uncommon shape or unusual loading
conditions. The programme creates the nite element
model of a particular glazing design, applies the specied
loads and edge conditions and runs the deection
analysis. Consult your nearest SABIC Innovative Plastics
Technical Service Centre for further advice.
Table 16a:
Height of
Building m
wind speed
m/s
wind pressure
N/m²
0 – 8 28,3 500
8 – 20 35,8 800
20 – 100 42 1100
> 100 45,6 1300
SABIC Innovative Plastics 33
Sheet Thickness Criteria
Support Conditions
Note
Regardless of the support conguration selected, the
sheet should always be installed so that the rib structure
channels are sloping downwards. Sheet “width” is the
dimension perpendicular to the rib structure, “length”
the dimension parallel.
Sloped roofing
For sloped glazing applications a minimum slope of 5°
(9 cm/m sheet length) is advised to allow for rainwater
drainage.
Safety Factor
Tables 17, 18 and 19 indicate the maximum allowable
sheet size at a specied loading which results in an
acceptable sheet deection behaviour without the risk
of sheet buckling or pop-out effect calculated with a
safety factor of 1.5.
N.B. The values indicated in the Tables are applicable for a
Lexan Thermoclear sheet edge engagement in the glazing
frame of at least 20 mm.
Site Safety
On roof constructions Lexan Thermoclear sheet should
not be used to support a person’s weight during instal-
lation or cleaning. A temporary wooden beam or other
device, supported by the roof members, should always
be used.
sheet edge
engagement ±20mm
27
°
28
29
sheet width
sheet length
26
34 SABIC Innovative Plastics
The deection characteristics in this particular
conguration are dependent upon the ratio of the
support bar spacing a:b, see Figure 30.
In practice “a” represents the centre to centre distance
of glazing proles on the short glazing side i.e. the
width of sheet.
“b” represents the centre to centre distance of glazing
proles on the long glazing side i.e. length of sheet.
Table 17 indicates the maximum allowable short glazing
side of three different ratios of glazing bar spacing.
Ratio sheet width “a”: sheet length “b” 1:1
Ratio sheet width “a”: sheet length “b” 1:<1.5
Ratio sheet width “a”: sheet length “b” 1:>1.5
Flat Glazing sheet Thickness
Example I
Window size: width 800 mm
length: 1200 mm
(Ratio a:b = 1 : 1.5)
Loading: 1600 N/m2
Required sheet type: LT2UV10/2RS17
Example II
Window size: width 1100 mm
length 3000 mm
(Ratio a:b = 1 : >1.5)
Loading: 600 N/m2
Required sheet type: LT2UV16/3TS28 or LTUV16/3TS27
Table 17: Centre to Centre Distance (mm) of glazing proles (shortest side (a))
Ratio sheet width: sheet length
1:1
1:<1,5
1:>1,5
1:1
1:<1,5
1:>1,5
1:1
1:<1,5
1:>1,5
1:1
1:<1,5
1:>1,5
1:1
1:<1,5
1:>1,5
1:1
1:<1,5
1:>1,5
1:1
1:<1,5
1:>1,5
1:1
1:<1,5
1:>1,5
Loading in N/m2600 800 1000 1200 1400 1600 1800 2000
LT2UV452RS10
690 850 450
LT2UV62RS13
1050 920 610 950 850 570 900 780 530
LT2UV82RS15
1250 110 0 720 115 0 1020 655 1075 940 610 1020 900 570 970 830 535 930 780 510
LT2UV102RS17
1500 115 0 815 1375 1070 730 1280 950 670 1215 920 620 116 0 850 585 1110 800 545 1070 760 520
LT2UV103RS19
1470 1110 800 1355 1035 730 1265 935 675 1205 895 625 115 0 830 575 110 5 780 540 1065 745 510
LT2UV103X20
1800 1250 900 1700 118 0 870 1600 112 0 810 1520 1050 750 1450 1000 720 1350 950 700 1300 900 660 1200 850 620
LT2UV103T20
1540 1310 890 1410 1250 810 1320 1150 750 1250 1060 700 1200 980 660 115 0 920 630 1110 860 610 1070 810 585
LT2UV105RS175
1600 1200 850 1500 110 0 800 1425 1050 750 1375 980 700 1300 950 650 1200 900 600 110 0 850 550 1000 800 500
LT2UV163TS27
1700 1420 110 0 1600 1310 980 1500 1210 880 1450 1120 810 1400 1060 750 1300 1000 700 1250 950 665 1200 900 620
LT2UV163TS28
2100#1420 110 0 1950 1310 980 1825 1210 880 1725 112 0 810 1650 1060 750 1550 1000 700 1475 950 665 1250 900 620
LT2UV163X29
2100#1700 1200 2100#1600 115 0 1900 1450 110 0 1800 1350 1050 1700 1200 1000 1600 110 0 950 1500 1000 900 1400 950 850
LT2UV166RS27
1800 1400 115 0 1700 1350 1050 1600 1220 980 1500 115 0 950 1420 110 0 900 1300 1050 880 1200 1000 850 110 0 950 800
LT2UV205RS33
2100#1600 1200 2100#1500 115 0 2000 1400 1050 1900 1300 980 1700 1200 900 1600 115 0 850 1500 1050 800 1400 1000 750
LT2UV205X32
1250#1250#1250#1250#1250#1200 1250#1250#115 0 1250#1250#110 0 1250#1250#1050 1250#1250#1000 1250#1250#980 1250#1250#920
LT2UV206RS30
1250#1250#1250#1250#1200#1150#1250#1250#115 0 #1250#1200#110 0#1250#115 0 #1000#1250#110 0 #980#1200#980#900#1150#950#850#
LT2UV255X34
1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1200 1250#1250#110 0 1250#1250#1000
LT2UV256RS35
1250#1250#1250#1250#1250#1250#1250#1250#1200 1250#1250#115 0 1250#1250#110 0 1250#1250#1050 1250#1250#1000 1250#1250#950
LT2UV325X38
1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1250#1200 1250#1250#110 0
LT2UV359X40
1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#
LT2UV409X43
1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#
LT2UV459X45
1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#
LT2UV509X48
1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#1200#
# centre to centre distance = maximum sheet width
a
b
30
SABIC Innovative Plastics 35
Flat Glazing sheet Thickness
Two sides clamped, glazing bars parallel
with rib structure
a = centre to centre distance of glazing proles
b = sheet length
The major factor determining the sheet deection
behaviour is the distance “a” between the centre points
of two adjacent supports. Since any length of sheet can
be selected, the measurement “b” does not inuence
the overall deection performance.
Table 18: Centre to Centre Distance (mm) of glazing proles “a”; glazing proles parallel with the rib structure
centre to centre distance (mm)
Loading in Nm2600 800 1000 1200 1400 1600 1800 2000
LT2UV62RS13 570 530
LT2UV82RS15 655 61 570 535 510
LT2UV102RS17 730 670 620 585 545 520
LT2UV103RS19 800 730 675 625 575 540 510
LT2UV103X20 900 870 810 750 720 700 660 640
LT2UV103T20 890 810 750 700 660 630 610 585
LT2UV105RS175 850 800 750 700 650 600 550
LT2UV163TS27 1100 980 880 810 750 700 665 620
LT2UV163TS28 1100 980 880 810 750 700 665 620
LT2UV163X29 1200 1150 1100 1050 1000 950 900 850
LT2UV166RS27 1150 1050 980 950 900 880 850 800
LT2UV205RS33 1200 1160 1070 980 920 860 810 770
LT2UV205X32 1250#1250#1250#1150 1050 1000 950 900
LT2UV206RS30 1250 1200 1100 1050 1000 950 900 800
LT2UV255X34 1250#1250#1250#1250#1175 1100 1050 1000
LT2UV256RS35 1250#1250#1200 1150 1100 1050 1000 950
LT2UV325X38 1250#1250#1250#1250#1250#1200 1150 1100
LT2UV359X40 1200#1200#1200#1200#1200#1200#1200#1200#
LT2UV409X43 1200#1200#1200#1200#1200#1200#1200#1200#
LT2UV459X45 1200#1200#1200#1200#1200#1200#1200#1200#
LT2UV509X48 1200#1200#1200#1200#1200#1200#1200#1200#
# centre to centre distance = maximum sheet width
a
b
a
31
36 SABIC Innovative Plastics
Flat Glazing sheet Thickness
oversized hole
purlin expansion
allowance
32
In this situation, the major factor inuencing deection
behaviour is the purlin spacing.
The sheet width has no inuence on the deection
behaviour of the sheet when exposed to loading.
This means that any sheet width up to the maximum
standard width can be selected.
In the case of vertical glazing, should a greater span
width be required, a standard polycarbonate “H” prole
is sufcient to join two sheets together to form a sound,
water-tight joint. No additional vertical glazing support
bars are necessary.
In the case of sloped glazing, a support/glazing prole
is recommended to join two sheets together, not only
for a watertight joint, but also to avoid excessive sheet
deection already caused by the sheet’s own weight.
Fastening Lexan Thermoclear sheet to the intermediate
purlins using conventional nuts, bolts and washers is
possible. However, all joints and clamping areas require
support in the form of compatible rubber washers
to distribute the clamping force over as wide an area
as possible. To facilitate this, large metal washers
laminated with compatible rubber and assembled with
spacing collars should be used. Bolts should not be
tightened so that the force permanently deforms the
sheet or restricts its natural expansion and contraction.
An alternative method of assembly involves a specially
designed polyamide “cladding button” which is available
at any authorised Lexan Thermoclear sheet distributor.
The button is designed so that the compatible rubber
gasket is an integral part of the bolt which has a large
head to distribute the clamping forces.
When using any type of bolt assembly it is important to
remember that the spacing between the hole and the
sheet edge should be at least 40 mm.
Note
When applying the glazing method described above,
the following points must be taken into consideration.
• Penetration of water and dust between the “H” prole
and the sheet surface may create streaks.
By applying a recommended silicone sealant this
penetration can be restricted.
• It is extremely difcult to obtain a watertight
connection between the washer or button and the
Lexan Thermoclear sheet surface.
• Water and dust can easily penetrate into the bolted
sheet channel which consequently results in algae
growth or cobweb formation.
Consider this glazing system as suitable only when
appearance is of minor importance.
oversized hole
cladding button
expansion
allowance
min. 40 mm
33
max. stand width
Spacing
between
the purlins
34
SABIC Innovative Plastics 37
Table 19: Centre to centre distance of purlins in mm; glazing profiles 90° to rib structure
centre to centre distance (mm)
Loading in Nm2600 800 1000 1200 1400 1600 1800 2000
LT2UV452RS10 500
LT2UV62RS13 690 630 590 570 540 520 500 480
LT2UV82RS15 830 760 720 680 650 630 600 580
LT2UV103RS19 900 910 855 800 770 740 710
LT2UV103X19 1010 930 875 830 790 760 730 710
LT2UV102RS17 1010 930 875 830 790 760 730 710
LT2UV103T20 1010 930 875 830 790 760 730 730
LT2UV105RS175 1010 930 875 830 790 760 730 730
LT2UV163TS27 1450 1325 1240 1180 1130 1085 1050 1000
LT2UV163TS28 1450 1325 1240 1180 1130 1085 1050 1000
LT2UV163X29 1450 1325 1240 1180 1130 1085 1050 1000
LT2UV166RS27 1450 1325 1240 1180 1130 1085 1050 1000
LT2UV205RS33 1550 1440 1350 1275 1220 1175 1140 1100
LT2UV206RS30 1550 1440 1350 1275 1220 1175 1140 1100
LT2UV255X34 1675 1525 1435 1360 1290 1290 1200 1150
LT2UV256RS35 1675 1525 1435 1360 1290 1250 1200 1150
LT2UV329X38 2000 1850 1700 1600 1500 1450 1400 1350
LT2UV359X40 2000 1900 1800 1700 1600 1500 1450 1400
LT2UV409X43 2100 2000 1900 1800 1700 1600 1550 1500
LT2UV459X45 2300 2200 2100 2000 1900 1800 1700 1600
LT2UV509X48 2400 2300 2200 2100 2000 1900 1800 1700
Flat Glazing sheet Thickness
38 SABIC Innovative Plastics
Curved Glazing sheet Thickness
Lexan Thermoclear sheet can be successfully cold-
curved over curved support glazing proles, to suit
many glazing applications, e.g. domes, roof-lights,
etc. Providing the radius is not below the minimum
recommended value, then the introduced stress by
cold-curving will not have any adverse effect upon the
mechanical performance of the sheet. Sheets must
always be bent longitudinally, never across the width of
the sheet.
Table 20: Minimum radius values
Lexan Thermoclear
sheet thickness Min. Radius in mm
6 1050
8 1400
10 1750
16 2800
20 3500
25 4375
The loading characteristics given in Table 21 are
based upon curved glazing applications clamped on
all four edges. The Table shows linear buckling load
values, (calculated with a safety factor of 2.0), against
installation radii for different sheet widths.
sheet length ‘L’ needs to be greater than sheet width
‘W’ to facilitate curvature; in practice, a ratio of 1:2 or
less is never contemplated because of the practicalities
of installation geometry.
radius 'R'
span
centre to centre
distance between
curved support/glazing
profiles
35
SABIC Innovative Plastics 39
Curved Glazing sheet Thickness
Table 21: Centre to centre distance (mm) curved glazing profiles
LT2UV62RS13
Loading in N/m2600 800 1000 1200 1400 1600 1800 2000
Radius “R” (mm) centre to centre distance (mm) curved glazing profiles
1050 2100 1800 1500 1250 1070 960 860 750
1200 1900 1500 1250 1000 900 800 700 600
1300 1700 1400 1100 900 790 700 630 570
1400 1600 1200 960 830 720 630 570 500
1500 1450 1100 900 750 660 570 500 450
1600 1350 1000 820 680 600 500 450 450
1700 1250 930 760 650 530 450 450 450
1800 1150 860 700 620 450 450 450 450
1900 1050 800 640 580 450 450 450 450
2000 920 750 600 530 450 450 450 450
2100 850 700 550 470 450 450 450 450
2200 800 670 500 450 450 450 450 450
2300 750 600 450 450 450 450 450 450
2400 700 550 450 450 450 450 450 450
2500 650 550 450 450 450 450 450 450
2600 650 500 450 450 450 450 450 450
2700 650 500 450 450 450 450 450 450
LT2UV82RS15
Loading in N/m2600 800 1000 1200 1400 1600 1800 2000
Radius “R” (mm) centre to centre distance (mm) curved glazing profiles
1400 2100 1900 1700 1300 1100 1000 870 780
1500 2000 1700 1350 1160 1000 880 800 720
1600 1950 1650 1270 1060 920 810 720 660
1700 1830 1510 1180 990 860 760 670 600
1800 1710 1370 1090 920 800 710 620 550
1900 1600 1230 1000 840 730 650 580 550
2000 1480 1150 920 780 680 600 550 550
2100 1380 1070 870 730 640 550 550 550
2200 1320 980 820 700 600 550 550 550
2300 1220 930 770 660 550 550 550 550
2400 1150 880 700 600 550 550 550 550
2500 1100 830 650 550 550 550 550 550
2600 1020 750 600 550 550 550 550 550
2700 950 700 600 550 550 550 550 550
2800 870 700 600 550 550 550 550 550
LT2UV102RS17
Loading in N/m2600 800 1000 1200 1400 1600 1800 2000
Radius “R” (mm) centre to centre distance (mm) curved glazing profiles
1750 2100 1930 1530 1320 1140 1000 900 800
1900 2100 1680 1380 1160 1020 880 800 720
2000 2000 1600 1280 1080 930 830 750 680
2100 1900 1470 1200 1010 870 770 700 600
2200 1820 1390 1120 950 820 780 650 560
2300 1700 1300 1060 890 780 690 620 560
2400 1600 1230 1000 840 740 630 620 560
2500 1530 1150 950 800 700 630 620 560
2600 1450 1070 900 750 660 630 620 560
2700 1380 980 860 700 660 630 620 560
2800 1280 930 820 700 660 630 620 560
2900 1220 900 790 700 660 630 620 560
3000 1160 880 750 700 660 630 620 560
3200 1080 830 750 700 660 630 620 560
3400 1000 830 750 700 660 630 620 560
40 SABIC Innovative Plastics
LT2UV103X20
Loading in N/m2600 800 1000 1200 1400 1600 1800 2000
Radius “R” (mm) centre to centre distance (mm) curved glazing profiles
1750 1850 1600 1500 1400 1350 1300 1200 1100
2000 1725 1500 1400 1350 1300 1250 115 1050
2250 1625 1450 1350 1300 1250 1200 100 1000
2500 1525 1400 1300 1250 1200 1100 100 900
2750 1450 1350 1250 1200 1100 1000 900 800
3000 1375 1300 1200 1100 1000 900 800 700
3250 1300 1250 1100 1000 900 800 700 700
3500 1250 1200 1000 900 800 700 700 700
3750 1200 1175 900 800 700 700 700 700
4000 1150 1050 800 700 700 700 700 700
4250 1100 900 700 700 700 700 700 700
4500 1000 800 700 700 700 700 700 700
4750 900 700 700 700 700 700 700 700
5000 800 700 700 700 700 700 700 700
5250 800 700 700 700 700 700 700 700
LT2UV105RS175
Loading in N/m2600 800 1000 1200 1400 1600 1800 2000
Radius “R” (mm) centre to centre distance (mm) curved glazing profiles
1750 2100 1930 1530 1320 1140 1000 900 800
1900 2100 1680 1380 1160 1020 880 800 720
2000 2000 1600 1280 1080 930 830 750 680
2100 1900 1470 1200 1010 870 770 700 600
2200 1820 1390 1120 950 820 780 650 560
2300 1700 1300 1060 890 780 690 620 560
2400 1600 1230 1000 840 740 630 620 560
2500 1530 1150 950 800 700 630 620 560
2600 1450 1070 900 750 660 630 620 560
2700 1380 980 860 700 660 630 620 560
2800 1280 930 820 700 660 630 620 560
2900 1220 900 790 700 660 630 620 560
3000 1160 880 750 700 660 630 620 560
3200 1080 830 750 700 660 630 620 560
LT2UV163TS28
Loading in N/m2600 800 1000 1200 1400 1600 1800 2000
Radius “R” (mm) centre to centre distance (mm) curved glazing profiles
2800 2100 1920 1580 1330 1150 1020 920 830
3000 2100 1780 1450 1210 1060 940 840 760
3200 2050 1620 1320 1110 970 860 760 690
3400 1920 1480 1210 1030 890 780 700 620
3600 1780 1400 1120 950 830 700 665 620
3800 1670 1300 1040 890 750 700 665 620
4000 1560 1200 960 810 750 700 665 620
4200 1460 1120 880 810 750 700 665 620
4400 1360 1040 880 810 750 700 665 620
4600 1300 980 880 810 750 700 665 620
4800 1200 980 880 810 750 700 665 620
5000 1100 980 880 810 750 700 665 620
5200 1100 980 880 810 750 700 665 620
5400 1100 980 880 810 750 700 665 620
5600 1100 980 880 810 750 700 665 620
Curved Glazing sheet Thickness
Continued Table 21: Centre to centre distance (mm) curved glazing proles
SABIC Innovative Plastics 41
LT2UV163X29
Loading in N/m2600 800 1000 1200 1400 1600 1800 2000
Radius “R” (mm) centre to centre distance (mm) curved glazing profiles
3200 2100 2100 2100 1850 1550 1400 1250 1100
3400 2040 2000 1900 1650 1450 1300 1200 1050
3600 1980 1900 1850 1550 1350 1200 1100 950
3800 1920 1800 1700 1450 1250 1120 1000 950
4000 1850 1700 1600 1350 1200 1050 950 950
4200 1790 1600 1500 1275 1150 1000 950 950
4400 1740 1500 1400 1200 1100 950 950 950
4600 1700 1400 1300 1140 1050 950 950 950
4800 1650 1300 1200 1100 1000 950 950 950
5000 1600 1200 1150 1050 950 950 950 950
5200 1550 1100 100 950 950 950 950 950
5400 1400 1050 950 950 950 950 950 950
5600 1300 1000 950 950 950 950 950 950
5800 1200 950 950 950 950 950 950 950
6000 1200 950 950 950 950 950 950 950
LT2UV166RS29
Loading in N/m2600 800 1000 1200 1400 1600 1800 2000
Radius “R” (mm) centre to centre distance (mm) curved glazing profiles
2800 2100 2100 1950 1660 1400 1270 1150 1050
3000 2100 2100 1800 1500 1320 1150 1050 950
3200 2100 2000 1650 1350 1200 1060 950 900
3400 2100 1850 1500 1280 1100 1000 900 900
3600 2000 1720 1400 1170 1020 950 900 900
3800 1950 1600 1300 1100 950 900 900 900
4000 1800 1500 1200 1000 900 900 900 900
4200 1700 1400 1100 950 900 900 900 900
4400 1600 1300 1000 900 900 900 900 900
4600 1500 1200 900 900 900 900 900 900
4800 1400 1100 900 900 900 900 900 900
5000 1250 1000 900 900 900 900 900 900
5200 1100 900 900 900 900 900 900 900
5400 1100 900 900 900 900 900 900 900
5600 1100 900 900 900 900 900 900 900
LT2UV205RS33
Loading in N/m2600 800 1000 1200 1400 1600 1800 2000
Radius “R” (mm) centre to centre distance (mm) curved glazing profiles
3600 1850 1500 1300 1200 1100 1000 900 850
3700 1800 1450 1250 1150 1050 950 855 810
3800 1750 1400 1200 1100 1000 900 810 770
3900 1710 1360 1175 1075 975 880 810 770
4000 1675 1325 1150 1050 950 860 810 770
4100 1640 1300 1110 1120 920 860 810 770
4200 1600 1275 1075 980 920 860 810 770
4300 1550 1230 1035 980 920 860 810 770
4400 1500 1200 1000 980 920 860 810 770
4500 1450 1180 950 980 920 860 810 770
4600 1400 1160 950 980 920 860 810 770
4700 1350 1130 950 980 920 860 810 770
4800 1300 1050 950 980 920 860 810 770
4900 1250 980 950 980 920 860 810 770
5000 1200 980 950 980 920 860 810 770
Curved Glazing sheet Thickness
Continued Table 21: Centre to centre distance (mm) curved glazing proles
42 SABIC Innovative Plastics
Curved Glazing sheet Thickness
LT2UV205X33
Loading in N/m2600 800 1000 1200 1400 1600 1800 2000
Radius “R” (mm) centre to centre distance (mm) curved glazing profiles
3700 1250 1250 1250 1250 1250 1250 1250 1250
3900 1250 1250 1250 1250 1250 1250 1250 1200
4100 1250 1250 1250 1250 1250 1250 1200 1150
4300 1250 1250 1250 1250 1250 1200 1150 1100
4500 1250 1250 1250 1250 1200 1150 1100 1050
4700 1250 1250 1250 1200 1150 1100 1050 1000
4900 1250 1250 1200 1150 1100 1050 1000 950
5100 1250 1200 1150 1100 1050 1000 950 950
6300 1200 1150 1100 1050 1000 950 950 950
5500 1150 1100 1050 1000 950 950 950 950
5700 1100 1050 1000 950 950 950 950 950
5900 1050 1000 950 950 950 950 950 950
6100 1000 950 950 950 950 950 950 950
6300 950 950 950 950 950 950 950 950
Continued Table 21: Centre to centre distance (mm) curved glazing proles
SABIC Innovative Plastics 43
sheet Glazing Guidelines
Wet Glazing
Do’s
• Clean the window frame. Remove old putty or broken
glass, if necessary.
• Measure the sheet edge engagement area (± 20 mm)
and internal window frame dimensions, i.e. the space
into which the Lexan Thermoclear sheet will be tted.
• Calculate the sheet size, allowing clearance for
thermal expansion (3 mm per linear metre).
• Select the right thickness to full loading
requirements, U-value, etc.
• Clamp the Lexan Thermoclear sheet to a support
table to avoid vibration and rough cutting.
• Cut the sheet to the required size, using a standard
electric circular or jig saw.
• Blow away saw dust build-up in the channels with dry
compressed air.
• Remove any sharp edges and irregularities from
the sheet.
• Peel back approximately 50 mm of the masking lm
from all edges of the cut sheet on both sides.
• Carefully select the sealing tape appropriate to the
glazing application.
• Seal the top and the bottom sheet channels with
impermeable and/or venting tape, f.i. Multifoil G3600
/ AD 3400 / AD4500.
Please refer to the processing instructions provided
by the sealing tape supplier.
• In case of venting tape, and to allow condensation
drainage, apply an alu closure prole with drainage
possibilities or apply some single sided self adhesive
glazing tape as distance holder between the venting
holes.
• For wet glazing apply single sided self adhesive
glazing tape or rubber prole to both window frame
and bead.
• For dry glazing, snap-t compatible neoprene rubber
gaskets in place in the support prole as well as in the
clamping cover prole.
• Insert the Lexan Thermoclear sheet into the window
frame.
• Lexan Thermoclear sheet must always be installed
with the ribs running vertically. The UV protected
surface should always face outwards.
• Fix the window bead or the clamping cover prole
in place.
• For wet glazing apply an approved silicone sealing
compound, such as Silglaze/Silpruf between the
sheet and the window frame/bead.
• Remove all masking lm immediately after
installation.
• Clean the window carefully with warm soapy water
and with a soft cellulose sponge or woollen cloth.
Dry Glazing
Don’ts
• Do not use plasticised soft PVC or incompatible
rubber sealing tapes or gaskets.
• Do not use Amine, Benzamide or Methoxy based
sealants.
• Do not use abrasive or highly alkaline cleaners.
• Never scrape Lexan Thermoclear sheet with
squeegees, razor blades or other sharp instruments.
• Do not walk on Lexan Thermoclear sheet at any time.
• Do not install Lexan Thermoclear sheet with damaged
tapes.
• Do not clean Lexan Thermoclear sheet in hot sun or
at elevated temperatures.
• Benzene, gasoline, acetone, carbon tetrachloride
or butyl cellosove should never be used on Lexan
Thermoclear sheet.
Metal frame Glazing filler tape
Silicone sealant
36
sheet edge
engagement ± 20 mm
37
Americas:
SABIC Innovative Plastics
Specialty Film & Sheet
One Plastics Avenue
Pittsfield, MA 01201
USA
T +1 413 448 5400
F +1 413 448 7506
Toll Free 800-451-3147
Europe:
SABIC Innovative Plastics
Specialty Film & Sheet
Plasticslaan 1
4612 PX Bergen op Zoom
The Netherlands
T +31 164 292911
F +31 164 292940
Pacific:
SABIC Innovative Plastics
Specialty Film & Sheet
1468 Nanjing Road (W)
26th Floor, United Plaza
200040 Shanghai
China
T +86 21 3222 4500
F +86 21 6289 8998
email: sfs.info@sabic-ip.com
Contact us
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to the suitability of Seller’s products, services or recommendations for the user’s particular use through appropriate end-use testing and analysis. Nothing in any document or oral statement
shall be deemed to alter or waive any provision of Seller’s Standard Conditions of Sale or this Disclaimer, unless it is specically agreed to in a writing signed by Seller. No statement by Seller
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recommendation for the use of such product, service or design in a manner that infringes any patent or other intellectual property right.
SABIC Innovative Plastics is a trademark of SABIC Holding Europe B.V.
* Trademark of SABIC Innovative Plastics IP B.V.
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All Rights Reserved
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