HomeFloor HeatingInsulationInsulated Underlay

Insulated Underlay

A thin polystyrene insulation barrier with effective acoustic properties to reduce contact noise.

Guide Price
$1.87 /ft²

Warmup Heated Insulated Underlay
Electric icon

Heat loss resistance

icon-checkmark  Increases the energy efficiency of your underfloor heating system by pushing the heat-upwards

Very thin

icon-checkmark  Only 1/4″ in depth


icon-checkmark  Easy to install


icon-checkmark  Comes in roll of 270sqft & 110sqft

Insulated Underlay for Underfloor Heating

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.

Warmup Underfloor Insulated Unnderlay


Width – 4ft
Full Roll: 110 sqft




Top Layer: Grooved polystyrene

This Product is used with:

Warmup Underfloor Foil Heating Mat

Foil Heater

Electric underfloor heating system for laminate, carpet, vinyl, engineered wood and other floating floor finishes.