The Warmup foil heater safely heats under most wooden and floating floors. This underfloor heating foil can also be used to safely heat under carpet, vinyl and other resilient floors when combined with Warmup insulated underlay and Warmup dual overlay. Simple to install, the foil heaters design promotes even warmth from beneath your flooring, eradicating problems with hot and cold spots. It can be conveniently installed under the floor finish in both dry and wet areas without the need for additional earth grids.