HomeHeated FloorsInsulationInsulated Underlay

Insulated Underlay

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

Guide Price
$2.22 /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

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


1200mm (W) x 600mm (L)


Base board – 3mm
Top board – 4mm


MDF, fitted with an interactive adhesive

Density (kg/m³)


Bending Strength kg/cm²


Humidity (%)


Thermal R value (W/m²K)


Fire Class, DIN4102


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.