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electric underfloor heating insulated underlay

Insulated Underlay

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

Guide Price
£31.78 RRP ex. VAT

Key benefits


Heat Loss Resistance

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


Thin and lighweight

Offers rapid installation times and only 6mm in depth


Use with Dual Overlay for soft floor covers

Helps make the most of your foil heater by creating a highly energy efficient heating system and sound proofed floors

insulated underlay

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. The Insulated Underlay has been specially developed for installation under the Foil Heater and Dual Overlay as part of a complete and stable system.

The insulated Underlay and Dual Overlay make an ideal combination for installation of soft and resilient floor coverings such as carpet and vinyl over the Warmup Foil Heater.

Technical Information

Product Documentation
Technical Specifications
Roll Size 1200mm(W); 2.5sqm, 5sqm, 10sqm and 25sqm (L)
Thickness 6mm
Composition Top Layer: Grooved polystyrene
Bottom Layer: Silver foil with adhesive overlap
R Value 0.17 m²K/W
Contact Sound Reduction 25dB  ∆Lw when used in conjunction with the Warmup Dual Overlay System

This Product is used with

foil heater

Foil Heater

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

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Warmup offers an extensive range of electric and water floor systems compatible with all floor types, rooms and projects.

Electric Systems

  • ✓ Ideal for zones less than 25m²
  • ✓ Ideal for single rooms
  • ✓ Does not alter floor levels
  • ✓ Great for renovations

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Water Systems

  • ✓ Ideal for larger zones over 25m²
  • ✓ Rapid auto heat loss calculations
  • ✓ Compatible with existing central heating systems
  • ✓ Great for new-builds

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For areas of 24m2 or more, use our full quoting system
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