Installed directly beneath your water underfloor heating system, water insulation boards work to provide protection whilst ensuring both heat and money are saved in the process. Safe for use with hot water systems, these boards provide outstanding thermal performance, ensuring the heat of the system is not wasted through the floor. Designed with high-grade polystyrene, water insulation boards offer enhanced resistance to fire, rot and general corrosion whilst also providing excellent acoustic insulation in the home.