25mm 7Xwall Corotherm is a light weight, impact resistant polycarbonate roofing and glazing sheet. 25mm 7Xwall has a U-value of 1.4W/m²K and is available in clear, bronze, opal, bronze opal and heatguard opal. Available in full sheets and cut to size. It is guaranteed for 10 years.
Constructed from durable, hard wearing polycarbonate, the Corotherm 25mm Clear Multiwall Roofing Sheet offers a reliable and versatile solution for a wide range of building projects, including greenhouses, outhouses, conservatories, and carports. The sheet can be easily cut to size, ensuring seamless coverage tailored to your installation.
With its excellent insulating properties, this 25mm multiwall sheet helps maintain a warm and comfortable internal environment. Designed to perform in demanding weather conditions, it boasts an impressive 0.6kN/m² snow and wind load capacity, providing long lasting stability and structural confidence.
A 20mm edge engagement ensures compatibility with the Corotherm proprietary glazing system, delivering a secure and professional finish. Installation is straightforward: the sheet can be fixed along the top edge using either wall flashing or the Corotherm glazing system, and secured near the bottom edge with a single fixing button for added stability.
The internal flutes run the full length of the sheet, and must be aligned with the roof pitch or slope to ensure proper drainage and performance. For optimal safety and durability in adverse weather, it is recommended to maintain a maximum span of 1250mm between glazing bars. When installing multiple sheets, a glazing bar should be used along the full roof slope to create a strong, continuous connection and a reliable, weather?resistant finish.