Warm flat roof insulation boards are designed to provide high-performance thermal insulation for modern flat roofing systems. Installed above the roof deck and beneath the waterproofing membrane, warm roof insulation helps maintain consistent internal temperatures while reducing heat loss and improving overall energy efficiency.

Our range of warm flat roof insulation boards includes high-quality PIR insulation boards suitable for use with single-ply membranes, bituminous roofing systems and mechanically fixed waterproofing systems. These boards offer excellent compressive strength, dimensional stability and long-term durability, making them ideal for both new build construction and flat roof refurbishment projects.

Available in a variety of thicknesses, including 25mm, 50mm, 75mm and 100mm, warm flat roof insulation boards provide reliable thermal performance while supporting a smooth, stable surface for roofing membranes.

Whether you are working on a commercial roofing project, residential flat roof or extension, warm roof insulation helps meet modern UK building regulations for thermal efficiency while protecting the structure of the building.