Heatwave Underfloor Heating Carpet Underlay – Flame Retardant PU Foam (8.5mm)

Heatwave is a premium flame-retardant polyurethane (PU) foam underlay, specifically engineered for use with underfloor heating systems. It combines exceptional underfoot comfort with efficient heat transfer, making it an ideal choice for modern homes where warmth, safety and performance matter.

Manufactured from super-soft PU foam, Heatwave delivers a luxurious feel beneath carpet while maintaining a low tog rating of just 0.96. This allows heat to pass through easily, ensuring underfloor heating systems operate efficiently without trapping warmth beneath the surface.

Designed with fire safety in mind, Heatwave features flame-retardant properties that provide added peace of mind. Its excellent compression recovery helps carpets retain their appearance over time, reducing flattening and wear even in heavier-use domestic areas. Lightweight, easy to handle and simple to install, Heatwave is a practical and high-performance solution for homes using underfloor heating.

Key Features

• Flame-retardant PU foam carpet underlay
• Specifically designed for underfloor heating systems
• Low tog rating for efficient heat transfer
• Super soft and comfortable underfoot
• Excellent compression recovery and durability
• Helps carpets maintain a just-fitted appearance
• Lightweight and easy to cut and install
• Made from 100% recyclable polyurethane foam

Technical Specifications

Material: PU Foam
Traffic Rating: Heavy
Classification (BS5808): Luxury Use
Density: 110 ±5% kg/m³
Thickness: 8.5mm
Roll Dimensions: 1.37m x 11m (15.07m²)
Roll Weight: 13.3kg
TOG Rating: 0.96 tog
Impact Sound Reduction: 36 dB (estimated)

Performance & Testing:
• Loss in thickness after static loading: BS4939:1987
• Loss in thickness after dynamic loading: BS4052:1987
• Double Sticking Castor Wheel Test: Pass
• Flammability (Hot Metal Nut Test): Pass – Low Radius of Effect (BS 4790:1987)
• Reaction to Fire Classification: Bfl-s1

Guarantee: Lifetime of carpet