- Postcode districts
- SE2, SE9, SE18, SE28
- Nearby
- Blackheath, Welling and Catford
- 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 Eltham?
Our guide price for bathroom underfloor heating in Eltham is £900–£3,100 including VAT. Labour costs in London put local prices at about 25% above the UK guide figure. The figure depends on the size of the room, whether anything moves, and the products you pick.
Electric mat
- Insulation board
Electric, larger room
- Electrician sign-off
Wet system
- Pipes linked to the heating
Guide prices for Eltham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Eltham
As well as Eltham itself (SE2, SE9, SE18 and 1 more postcode districts), we survey in Blackheath, Welling and Catford.
In Eltham, many bathrooms are in flats or converted houses, so we check lease consents, access and the floor below before we price. If your Eltham home has a suspended timber floor, insulation boards under the mat stop heat disappearing into the void below. Where a Eltham home already has a heat pump, or the heating is being altered, a wet underfloor system is worth comparing with electric.
Most of Greater London has very hard water. 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
- Insulation boards over the subfloor, so heat goes up into the tiles rather than down into the joists or screed
- A dial, programmable or smart thermostat, with the supply RCD protected, tested and certified by a qualified electrician
- Bringing the system up to temperature gradually once the adhesive and grout have cured
- A check of the floor construction, the room's heat loss and where the thermostat and supply will go
Decisions to make first
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.
Electric or wet
Electric is cheaper to install and quick to lay in one room. Wet costs more upfront but is usually cheaper to run where it is fed by a gas boiler or heat pump.
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.
