Underfloor heating in Blackheath

Postcode districts: SE3, SE10, SE13
Nearby: Greenwich, Catford and Eltham
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 Blackheath?

In Blackheath, bathroom underfloor heating typically costs £900–£3,100 including VAT, based on London prices. 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.

Typical

Electric mat

£900–£1,900

Mat under the tiles

Electric, larger room

£1,500–£2,800

Programmable smart thermostat

Wet system

£1,900–£3,800

Screed or low-profile boards

Guide prices for Blackheath including VAT. Your itemised written quote after the free survey is the price that counts.

Working in Blackheath

We work right across Blackheath — SE3, SE10 and SE13 — and in neighbouring Greenwich and Catford.

In Blackheath, many bathrooms are in flats or converted houses, so we check lease consents, access and the floor below before we price. For Blackheath homes having the bathroom floor replaced, underfloor heating adds one to two days to the fit. We check door thresholds in Blackheath homes at the survey, because underfloor heating and new tiles raise the floor slightly.

Water across much of Greater London is 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

Insulation boards over the subfloor, so heat goes up into the tiles rather than down into the joists or screed
A floor sensor set between the heating runs and wired back to the thermostat
A dial, programmable or smart thermostat, with the supply RCD protected, tested and certified by a qualified electrician
A check of the floor construction, the room's heat loss and where the thermostat and supply will go

Decisions to make first

Thermostat

A simple dial thermostat, a programmable one with set times, or a smart thermostat you can control from your phone.

Floor finish

Tiles and stone pass heat through well. LVT and vinyl can work, but check the maximum floor temperature the flooring maker allows.

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.

More about underfloor heating

Underfloor heating in Blackheath: questions

How much should I budget for bathroom underfloor heating in Blackheath?

Bathroom underfloor heating in Blackheath usually costs £900–£3,100 including VAT. Where you land in that range depends on the size of the room, whether the layout changes and the products you choose. After the free survey you get an itemised written quote, and the price is fixed in writing once the layout and products are agreed.

Is the home survey in Blackheath really free?

Yes. We visit, measure the room, check the pipework, drainage and electrics, and talk through what you want. You then get a written, itemised quote with no obligation to go ahead.

Do you cover SE3 in Blackheath?

Yes. We cover all of Blackheath, including SE3, SE10 and SE13, and nearby Greenwich, Catford and Eltham. Survey visits are free and arranged at a time that suits you.

Is the water hard in Blackheath?

Does underfloor heating raise the floor height?

Yes, a little. An electric mat on an insulation board usually adds roughly 10 mm before the adhesive and tile, which matters at the door threshold. Wet systems in low-profile boards add more, and screeded systems more again.