4mm Clear Twinwall Polycarbonate Sheet
Our 4mm twinwall polycarbonate sheets are lightweight, yet with high-impact strength and superior thermal insulation. They are excellent for outdoor applications such as greenhouses and cold frames.
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UV1 Protection: UV resistant on one side, effectively blocking harmful UV radiation and preventing yellowing.
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Sheet(s) ends do not come pre-taped, therefore the flute ends will be exposed.
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We will always endeavour to keep to your measurements however, there is an industry standard tolerance of +/- 5mm when cutting.
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The flutes in the material run parallel to the length of the sheet.
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This material is cut to your individual requirements; therefore, they are bespoke and non-returnable.
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Materials may vary in brands due to supplier availability, we cannot guarantee a particular brand when your order is placed.
Our data sheets can provide you with additional information on this product.
Please contact us for further guidance.
Information
This material range is Class 1 Fire Rating BS476/7.
Twinwall and Multiwall polycarbonate sheets are UV-protected, but only on one side! Look for the protective film with writing on it — this is the UV-protected side and should face the sun. The other side has no UV coating and should face away.
We cannot guarantee where the blade lands when cutting the sheets, so it is not possible to ensure hard edges on all panels.
Please store and lay this material flat in a cool, dry place prior to installation.
Frequently Asked Questions
How Strong is 4mm Polycarbonate?
Polycarbonate is 250 times stronger than glass and is often said to be virtually unbreakable. It is an incredibly durable material with high-impact strength, yet remains lightweight and easy to work with.
What is the Lifespan of Twinwall Polycarbonate?
Polycarbonate can last upwards of 10 years provided that it was properly installed and well looked after. In some cases, it has been known to last for 20 years or more.
What’s the Difference Between Twinwall and Polycarbonate?
Twinwall is a type of polycarbonate sheeting that is made from two sheets connected by an interior plastic support that allows the two plastic sheets to run parallel to one another. This increases the material’s strength and thermal properties.
- 10-year Guarantee Against Discolouration
- Block Virtually All UV Radiation
- Class 1 Fire Rating
- Excellent Chemical Resistance
- Low Cost
- Supplied With Protective Film On Both Sides
- Weather Resistant
- Durable
- Simple & easy installation
Product Shading Coefficient Light Transmission U Value W/m2K Weight (KG) Number of Walls 4mm Clear 0.75 82% 3.8 0.8 Twin Box Material is available in cut-to size
- subject to +/- 5mm cutting tolerance
Material is Class 1 Fire Rating: BS476/7
Product colour tints subject to manufacturers production tolerances
Brands / Suppliers vary due to stock and availability
