The SOPRATHERM XR4000 Insulation Board is built for projects where higher insulation levels are essential without overcomplicating installation. Manufactured from rigid PIR foam with a low emissivity aluminium foil facing, it delivers impressive thermal performance while remai... Read More
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The SOPRATHERM XR4000 Insulation Board is built for projects where higher insulation levels are essential without overcomplicating installation. Manufactured from rigid PIR foam with a low emissivity aluminium foil facing, it delivers impressive thermal performance while remaining practical to handle on site. Suitable for pitched roofs, dry lining and floor applications, it's backed by BBA certification (Certificate 25/7318) for trusted, consistent use.
With a thermal conductivity of 0.022 W/mK, XR4000 boards help to significantly reduce heat loss while limiting the need for multiple insulation layers. The reflective foil facing enhances performance in sealed cavities, improving overall efficiency and long-term energy savings.
Question:
How thick is needed for a timber flat roof in England?
Answer:
The thickness of insulation required for a timber flat roof in England can vary depending on several factors, including the specific building regulations that apply to your project, the level of thermal conductivity you want to achieve, and the type of material used. Our SOPRATHERM XR4200 High Performance Insulation Board has a thickness of 200mm and a thermal conductivity of 0.022 W/mK. We also offer different variations of the product with thicknesses ranging from 110mm to 200mm. Please consult with a local building professional or authority to ensure you choose the correct insulation thickness for your specific project. They will have the most accurate information based on your local building codes and regulations.
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