Carpet underlay
Traditionally, insulating the floor has been one of the functions that an underlay is expected to fulfil. However, the opposite is required – namely the lowest possible insulation value – when underfloor heating is installed. In order to guarantee comfort, most underlays contain a lot of air which is a natural insulator. Therefore, when choosing an underlay, it makes sense to choose a compact underlay with the lowest possible resistance value (R value).
