Underfloor heating in Sutton

Postcode districts: KT4, SM1, SM2, SM3, SM5, SM6
Nearby: Banstead, Ewell and Epsom
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 Sutton?

As a guide, budget £900 to £3,100 including VAT for bathroom underfloor heating in Sutton; your written quote will pin it down. 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 Sutton including VAT. Your itemised written quote after the free survey is the price that counts.

Working in Sutton

In Sutton we cover KT4, SM1, SM2 and 3 more postcode districts; we also cover Banstead, 1.9 miles away, and Ewell.

In Sutton, many bathrooms are in flats or converted houses, so we check lease consents, access and the floor below before we price. Where a Sutton home already has a heat pump, or the heating is being altered, a wet underfloor system is worth comparing with electric. If your Sutton home has a suspended timber floor, insulation boards under the mat stop heat disappearing into the void below.

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
Resistance and insulation tests on the mat before, during and after tiling, with the readings recorded
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

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 Sutton: questions

How much does bathroom underfloor heating cost in Sutton?

Bathroom underfloor heating in Sutton usually costs £900–£3,100 including VAT. The final figure comes down to what you choose and what we find at the survey; your written quote lists every item so you can see where the money goes.

Do you cover KT4 in Sutton?

Yes. We cover all of Sutton, including KT4, SM1, SM2, SM3 and 2 more postcode districts, and nearby Banstead, Ewell and Epsom. Survey visits are free and arranged at a time that suits you.

Is the water hard in Sutton?

Who handles building control for bathroom underfloor heating in Sutton?

Building control for Sutton is handled by the local council or an approved inspector. If your job needs sign-off — for example a new circuit, new drainage or a new extractor where there was none — we tell you at the survey and handle the notification as part of the work.

Do I need an electrician to install bathroom underfloor heating?

Yes, for the connection. The fitter can lay the mat, but the supply, RCD protection and thermostat in a bathroom must be installed and tested by a qualified electrician, and in England and Wales the work is notifiable under Part P. Our underfloor heating guide covers the choices in more depth.