200W/m2 Loose Wire Underfloor Heating Cable Kits
Looking for an efficient primary heating solution? Our 200W/m2 loose wire underfloor heating cable is the ideal choice. Designed for professional installers, this system works perfectly under tiles or natural stone and can also be embedded in a latex/self-levelling compound beneath any floor type. At just 2mm thick, it is the thinnest heating element available, ensuring full wall-to-wall heat coverage. This makes it an excellent option for small spaces like WCs, bathrooms, or wet rooms.
Each wire is rated at 12W per linear meter and provides 200W per sqm when spaced 60mm apart. Our largest loose cable, at 200m long, covers 12sqm at 60mm spacings. For larger areas, you may need multiple thermostats or a 25A or 40A relay depending on the electrical load.
Easy Installation
The loose wires can be installed directly on stable wood, concrete, or screed subfloors. To maximize efficiency and heating response, we recommend using a cement-coated tile backer board or XPS insulation board. Proper insulation minimizes heat loss, especially in older properties. The heating should then be embedded in a self-levelling compound or flexible tile adhesive before the final flooring is installed.
Electric vs. Water Underfloor Heating
A common misconception is that electric underfloor heating is costly to run compared to water-based systems. In reality, when controlled correctly, electric heating is highly efficient. Unlike water systems, which rely on air sensors, electric underfloor heating should always use a floor sensor. This allows for faster, more responsive heating.
Electric heating warms the space from the floor up to six feet, eliminating wasted heat at the ceiling—unlike radiators. Additionally, it provides a sleek, radiator-free design. Covering 80% or more of the floor ensures that the system can serve as the sole heating source. For primary heating, we recommend a 200W system paired with insulation.
Alternatively, electric heating can also serve as a comfort system, providing warmth to specific areas while complementing other heating sources.
Lifetime Warranty & Free Technical Support
For peace of mind, our heat mats and loose cables come with a Lifetime Guarantee. Our expert team, with over 50 years of combined experience, is ready to assist before and after your purchase. We help determine the best heating solution for your project and provide free technical support.
If an issue arises, our specialists can diagnose and resolve most problems over the phone. In the rare event of an installation fault, our repair team can efficiently locate and fix any issue with minimal disruption.
Electric heating is straightforward in operation. The only moving parts are the thermostat controllers. When installed correctly by a qualified electrician, our products are fully covered by our Lifetime Guarantee.

Technical Specifications
Features & Specifications | |
---|---|
12W/lm output / Dual Core | Teflon insulated with earth shield |
Low Profile – Only 2mm | Ultra-thin & durable heating element |
Primary or Secondary Heat | Lifetime Warranty |
Quick & Easy Installation | Supplied with fixing tape |
IPX7 Waterproof Rating | Multiple Wire Sizes Available |
Customizable Wattage via Wire Spacing | Suitable for Most Floors |
HC Decoupling Compatible | Enhanced With XPS Insulation |
Tile Backer Board Compatible | Operating Voltage: 230/240V – 50Hz |
Double Insulated Element | Earth Connection |
Fully Sheathed & Earthed | 2.5m Long Cold Connection Tails |
Largest Wire in UK (200lm) | Free Technical Assistance |
3m Floor Sensor Probe (10k Ohms Thermistor) | Full Fitting Instructions |
Free Phone Help Line | Next-Day Delivery (Order Before 12 PM) |