Full Product Manual

10 SABIC Innovative Plastics
Custom-made industrial rooflights
Lexan Thermoroof* sheet systems
Lexan Thermoroof sheet systems offer a tailor-
made, fully insulated rooflight that can be installed
seamlessly into a corrugated metal roof without
any cold bridges. These panels can be tailor-made
according to customers’ designs and mechanical
requirements.
Exceptional light transmission
Lexan ZigZag* sheet systems
Lexan ZigZag sheet systems have been developed
to provide an outstanding combination of light
transmission and thermal insulation for heated
greenhouses. The panels are designed to click easily
together, without the need for support profiles.
This helps to reduce installation costs and provides
glazing that maximizes light transmission while
saving on energy costs. The sheet’s outer surface
is UV-protected and the inner surface is protected
with the proprietary Dripgard
®
coating to help
prevent crop spoilage through condensation.
Figure 11
Lexan ZigZag sheet light transmission
Light transmission comparison
Lexan ZigZag sheet 91%
Single layer glass (4mm) 88 - 90%
Acrylic SDP (64mm rib, 2 wall) 86%
Polycarbonate MWS (3 wall) 76%
Figure 12
Insulation value comparison
U-values
Single layer glass (4 mm) 5.8 W / m
2
K
Double glass (2*4mm) 2.9 W / m
2
K
Acrylic SDP 2.8 W / m
2
K
Lexan ZigZag 2.7 W / m
2
K
Figure 13
Energy savings versus single layer glass
Energy savings
Momentary 50%
Year round 20 - 45%
(crop dependent)
Figure 14
Panel weight comparison
Lexan ZigZag panel 4.0 kg/m
2
Single layer glass (4mm) 10.0 kg/m
2
Acrylic SDP (64mm rib distance, 2 wall) 5.0 kg/m
2
Polycarbonate MWS (3 wall) 2.7 kg/m
2
Lexan* sheet systems - low system costs, high performance