Electric underfloor heating is a great solution for bathrooms, kitchens, hallways and conservatories — areas where the floor finish allows heat to conduct efficiently and where the warmth underfoot makes a big difference in comfort.
How Does Electric Underfloor Heating Work?
Electric underfloor heating (UFH) uses resistive heating elements — either as a mat with cables woven through it, or as individual cables spaced across the floor — to generate heat. This heat conducts upward through the floor finish and into the room.
The system is controlled by a thermostat, typically flush-mounted on the wall, which allows you to set target temperatures and create heating schedules.
Mats vs Loose Cable
Heating mats are pre-spaced cables on a mesh carrier, making installation faster and easier. They are ideal for regular-shaped rooms where the mat can be rolled out evenly.
Loose cable gives more flexibility for irregular room layouts, around obstacles or for higher power density areas. Takes longer to install but suits complex spaces better.
What Floor Coverings Are Compatible?
Electric UFH works best under:
- Ceramic or porcelain tiles — the most efficient; tiles store and conduct heat very well
- Natural stone — similar to tiles; excellent heat transfer
- Engineered wood — compatible if rated for use with UFH
- Laminate — many products are UFH-compatible; check manufacturer specifications
- Vinyl and LVT — most modern products are UFH compatible
It is not suitable for solid wood (which may warp) and some carpets (high tog-rated carpets insulate against the heat).
Running Costs
Electric UFH is more expensive to run than wet (water-based) systems, but it is cheaper to install and ideal for small to medium areas where a wet system would be impractical. To keep costs down:
- Use a programmable thermostat to heat only when needed
- Insulate the subfloor to prevent heat loss downward
- Tile or stone floors retain heat well, requiring less active heating time
Installation Process
1. Existing floor covering removed if necessary
2. Insulation board laid (recommended)
3. Heating mat or cable installed and positioned
4. Thermostat back box and conduit installed
5. Floor finish (tiles/screed/LVT) laid over heating elements
6. Thermostat wired to a dedicated fused spur from consumer unit
7. System tested and commissioned
The installation must not cover the heating elements with grout or adhesive unevenly — care is needed during tiling.
Get a Quote
Onyx Electrical Solutions installs electric underfloor heating systems across Stockport and Greater Manchester. Call 07000 000000 for a free quote.