Description
The Thermonet 200W/m² Self-Adhesive Underfloor Heating Mat is built for in-screed installation, bathrooms, and other high heat-loss spaces. It delivers rapid warm-up and consistent, efficient radiant heat. Install directly under screed or embed below a 10 mm self-levelling compound, then finish with tiles, engineered timber, vinyl, or carpet.
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
500W
6×0.5m – 3.0m²
600W
7×0.5m – 3.5m²
700W
8×0.5m – 4.0m²
800W
9×0.5m – 4.5m²
900W
10×0.5m – 5.0m²
1000W
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, durable multi-strand twin conductors.
Full Self-Adhesive Mesh
Faster installation, firm substrate bond, even spacing for uniform heat.
Heating Cable Protection
Wire-side-down installation protects the cable during screeding and tiling.
Minimal Height Build-Up
Mat is 3.5 mm thick with a 4 mm low-profile cold tail. Usually concealed in adhesive or screed.
Works With Multiple Floor Finishes
Tiles directly. Use 10 mm self-levelling compound under engineered timber, vinyl, or carpet.
Safe, Simple & Reliable
- Fluoropolymer insulation on cable and conductors
- Continuous armoured earth sheath
- Twisted twin conductors minimise stress, expansion, and contraction
- Zero electromagnetic field interference (Zero EMF)
- Even, silent, and energy-efficient radiant heat


























