WARM-BOARD utilises a 15mm or an 18mm high density dry screed board, which acts as a heat conducting surface, transferring the heat from the pipes to the heated floor above. Once up to temperature, it delivers sufficient heat output to provide warm and even ambient temperatures within the living space. The best floor coverings to combine with the WARM-BOARD, are hard surfaces such as stone and tile, as they offer the least resistance to heat transfer compared to carpets. The main benefit of the WARM‐BOARD, is the option for the direct application of tiles, as it can be applied directly with the use of flexible adhesive. However, in most instances, a 6mm ply cover is recommended prior to tiling. When floor coverings such as carpet are to be fitted, the system design must factor in the extra heat output that will be needed; this loss in output needs to be negated by increasing the flow temperature.