Warmup Insulated Underlay


Regular price $338.00 Save $-338.00
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Only 97 items in stock!

Warmup Insulated Underlay sits between the cold subfloor and the Foil Heater, reflecting heat upwards, therefore, making the underfloor heating system more efficient and effective. The foil backing acts as an effective moisture barrier and should installed face down. The Insulated Underlay has been specially developed for installation under the Foil Heater.

The insulated Underlay makes an ideal combination for installation of soft and resilient floor coverings such as carpet and laminate over the Warmup Foil Heater.


Width – 4ft
Full Roll: 270 sqft




Top Layer: Grooved polystyrene