Fastwarm XPS Insulation Boards are designed for use with Fastwarm electric underfloor heating systems, providing an effective insulation layer over concrete and screeded floors. Engineered to handle compression strengths of up to 30 tonnes per m², these high-performance boards offer excellent durability while remaining extremely lightweight, highly efficient, and cost-effective. Their thermal insulation properties help to reduce heat loss, improving the overall efficiency of underfloor heating systems. Easy to handle and install, Fastwarm XPS Insulation Boards provide a practical and long-lasting solution for maximising heating performance. These boards are waterproof, approved by Ultra Tile adhesive manufacturers, and offer super high insulation values per mm3 with excellent sound insulation. They have a thermal conductivity value of 0.034 W/mK.