- Postcode districts
- TW4, TW13, TW14
- Nearby
- Ashford, Hounslow and Sunbury-on-Thames
- Guide price
- £900–£3,100
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Very hard across most of Greater London
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Feltham?
In Feltham, bathroom underfloor heating typically costs £900–£3,100 including VAT, based on London prices. Prices in London run at about 25% above the national guide, mainly because of labour rates. The figure depends on the size of the room, whether anything moves, and the products you pick.
Electric mat
- Thermostat and RCD-protected supply
Electric, larger room
- Whole floor coverage
Wet system
- Manifold or single-zone kit
Guide prices for Feltham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Feltham
In Feltham we cover TW4, TW13 and TW14; we also cover Ashford, 2.1 miles away, and Hounslow.
London homes in Feltham often mean stairs, permits and neighbours below; we plan the logistics as carefully as the bathroom. Where a Feltham home already has a heat pump, or the heating is being altered, a wet underfloor system is worth comparing with electric. We check door thresholds in Feltham homes at the survey, because underfloor heating and new tiles raise the floor slightly.
Supplies across most of Greater London are very hard. Hard water leaves white marks on dark grout and gloss tiles, so matt finishes and stain-resistant grout are the practical choice. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- For wet systems, pipes in low-profile boards or screed connected to a manifold or single-zone kit, with any boiler work done by a Gas Safe registered engineer
- A dial, programmable or smart thermostat, with the supply RCD protected, tested and certified by a qualified electrician
- Resistance and insulation tests on the mat before, during and after tiling, with the readings recorded
- Insulation boards over the subfloor, so heat goes up into the tiles rather than down into the joists or screed
Decisions to make first
Mat or loose cable
Mats are quickest on square, open floors. Loose cable is easier to route around awkward shapes, pipe boxing and a curved shower area.
Floor heating and towel rail
Underfloor heating warms the room; a towel rail dries towels. Many bathrooms have both, and a dual-fuel rail keeps working in summer when the boiler is off.
Rules that apply in England
In England, a new circuit for underfloor heating is notifiable under Part P, and so is connecting it to an existing circuit in a room with a bath or shower. The electrician either self-certifies through a competent person scheme or the work is notified to building control.
