Description
The Thermonet 150W/m² Self-Adhesive Underfloor Heating Mat provides comfortable, even, silent heating by radiating warmth up from the floor. Install directly under tiles or embed under a 10 mm self-levelling compound with floating or glue-down timber, vinyl, or carpet finishes.
Available Sizes & Thickness
500×5000×3.5mm
500×6000×3.5mm
500×7000×3.5mm
500×8000×3.5mm
500×9000×3.5mm
500×10000×3.5mm
Heating Options
5×0.5m – 2.5m²
375W
6×0.5m – 3.0m²
450W
7×0.5m – 3.5m²
525W
8×0.5m – 4.0m²
600W
9×0.5m – 4.5m²
675W
10×0.5m – 5.0m²
750W
Key Features & Benefits
Manufacturer Warranty
Lifetime warranty on heating mats and 3-year thermostat warranty. Made in the UK.
TwistedTwin Cable Construction
Zero EMF, stress-free geometry, longer cable life and reliability.
Full Self-Adhesive Mesh
Faster install. Holds the mat to the substrate for even spacing and consistent heat spread.
Heating Cable Protection
Wire-side-down install shields the cable during levelling and tiling.
Minimal Height Build-Up
Only 3.5 mm mat with a 4 mm low-profile cold tail. Typically concealed in tile adhesive.
Works with Multiple Floor Finishes
Direct under tiles. Under 10 mm self-levelling compound for engineered timber, vinyl, or carpet.
Safe, Simple & Reliable
- Fluoropolymer outer and inner conductor insulation
- Continuous armoured earth sheath
- Multi-strand twisted twin conductors minimise stress, expansion and contraction
- Zero electromagnetic field interference (Zero EMF)
- Even, silent and energy-efficient radiant heat


























