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- PU foam 16–22 mm or PE/OPP 3–4 mm bonded underneath
- Reduces heat gain and rain noise
- Limits condensation dripping inside
- Installed like a standard trapezoidal sheet
A cooler, quieter roof in one sheet
An insulating layer bonded to the underside of the sheet cuts radiant heat, softens rain noise and keeps condensation off the stored goods – without a separate insulation blanket. Polyurethane (PU) foam of 16–22 mm gives the best thermal performance; PE or OPP foil-faced foam of 3–4 mm is a lighter, economical option.
For higher thermal requirements, combine the roof with glass-wool insulation or use sandwich panels.
Profiles and technical data
| Code | Cover (mm) | Rib (mm) | Thickness (mm) | Insulation | Yield | Use |
|---|---|---|---|---|---|---|
| WS 1000-32-5PU | 1000 | 32 | 0.40–0.60 | PU 16–22 mm | – | Roof & wall |
| WS 1000-22-9PU | 1000 | 22 | 0.40–0.60 | PU 16–22 mm | G550 | Roof & wall |
| WS 1000-32-PE/OPP | 1000 | 32 | 0.40–0.60 | PE 3 or 4 mm | – | Roof & wall |
Standards and requirements by market
Codes World Steel designs, fabricates and documents this product to – and the key geometric and load requirements in each market.
United States
- ASTM A653 / A792Galvanized / 55 % Al-Zn coated sheet
- ASTM A755Coil-coated (pre-painted) metallic-coated sheet
- AISI S100Cold-formed steel design
- ASTM E1592 · UL 580Wind uplift testing of roof panels
Australia / NZ
- AS 1397Metallic-coated steel sheet – G300 to G550, Z / AZ coatings
- AS/NZS 2728Pre-finished / pre-painted sheet
- AS 1562.1Design and installation of metal roof and wall cladding
- AS 4040Methods of testing sheet roof and wall cladding (incl. cyclonic)
Europe
- EN 10346Continuously hot-dip coated steel flat products
- EN 10169Organic coated (pre-painted) steel flat products
- EN 14782Self-supporting metal sheet for roofing and cladding – CE marking
- EN 1993-1-3Cold-formed members and sheeting
Summary for orientation only – the project specification, the adopted code edition and the authority having jurisdiction govern.
Finishes
| Finish | Standards / notes |
|---|---|
| Zinc-aluminium (AZ) coated | AZ100–AZ150 · AS 1397 / ASTM A792 / EN 10346 |
| Galvanized (Z) | Z180–Z275 · AS 1397 / ASTM A653 / EN 10346 |
| Pre-painted | Polyester or SMP paint system on AZ / Z substrate · AS/NZS 2728 / ASTM A755 / EN 10169 |
| Colours | Standard colour range; special colours on minimum order quantity |
Frequently asked questions
How much cooler is an insulated sheet?
It depends on climate, colour and ventilation; PU-backed sheets reduce heat gain far more than PE/OPP. For energy-code compliance we calculate the roof build-up per project.
IAS AC472
