Timberlay Heatflow UnderlayTimberlay Heatflow is specifically designed for underfloor heating installations under wood and laminate flooring. The underlay allows the heating system to perform more efficiently through small holes that improves the rate in which heat is transferred to the surface of the floor, allowing a warmer underfoot feel and even a reduction in your energy bills! The underlay features superb sound reduction whilst also providing firmness underfoot making