Our 25mm two tone multiwall polycarbonate sheets are double-extruded. They have a bronze outer surface and an opal inner layer. It’s ideal for sunny conservatories, offering a good balance between heat reflection and light transmission (8% compared to Headguard’s 7%). The opal inner layer still provides a bright look and reflects artificial light at night.

Product	Shading Coefficient	Light Transmission	U Value W/m2K	Weight (KG)	Number of Walls
25mm Heatguard / Opal	0.3	7%	1.4	3.1	Seven X

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.

Opal Heatguard Polycarbonate Multiwall sheets are expertly designed with dual-layer color combinations to minimize heat build-up and solar glare while allowing softly diffused, natural daylight to fill your space. These sheets feature an innovative heat-controlling silver outer layer that reduces solar heat gain by up to 50%, complemented by a light-diffusing opal interior layer. Ideal for applications like sunrooms, conservatories, and roof lights, this material is perfect for creating a comfortable, well-lit environment. Specifically crafted for sunny, south-facing spaces, the Heatguard Multiwall Polycarbonate reflects and repels heat, keeping interiors cooler even in peak sunlight. The opal interior enhances daylight while reflecting artificial light at night, producing a soft, ceiling-like effect.

Pre-taping Service: Sheets come with aluminum and anti-dust tape applied to the ends of the sheet to prevent dirt and debris from entering the flutes. If you don’t want taping, please specify at purchase. During preparation, a 10mm strip of protective film is removed, leaving a visible score line; this is standard practice and does not impact quality.

The open ends of the sheets need to be sealed with sheet closures.

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.

Manufacturers data guides available upon request: sales@thepolycarbonatestore.co.uk

!Please store and lay this material flat in a cool, dry place prior to installation.

UV1 Protection: UV resistant on one side, effectively blocking harmful UV radiation and preventing yellowing.
Sheet ends can be pre-taped with aluminium and anti-dust tape. The aluminium tape is placed at the top of the sheet and the anti-dust at the bottom of the sheet.
We will always endeavour to keep to your measurements however, there is an industry standard tolerance of +/- 5mm when cutting.
The largest sheet size we can offer in this thickness is 2.1m x 7m (WxL).
The flutes in the material run parallel to the length of the sheet.
This material is cut to your individual requirements; therefore, they are bespoke and non-returnable.
Material may vary in brands due to supplier availability, we cannot guarantee a particular brand when your order is placed.
We recommend you don’t exceed 900mm width sheets without the correct supports.
Our data sheets can provide you with additional information on this product.
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

Pardon our dust! We're working on something amazing — check back soon!