- Postcode districts
- SL9
- Nearby
- Gerrards Cross, Rickmansworth and Amersham
- Guide price
- £800–£2,800
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Hard across most of Buckinghamshire
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Chalfont St Peter?
Guide price in Chalfont St Peter: £800–£2,800 including VAT, depending on the room and what you choose. Labour costs in South East England put local prices at about 12% 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 Chalfont St Peter including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Chalfont St Peter
In Chalfont St Peter we cover SL9; we also cover Gerrards Cross, 1.6 miles away, and Rickmansworth.
Chalfont St Peter gets the same process as anywhere else: a free survey at your home and a written, itemised quote. We check door thresholds in Chalfont St Peter homes at the survey, because underfloor heating and new tiles raise the floor slightly. If your Chalfont St Peter home has a suspended timber floor, insulation boards under the mat stop heat disappearing into the void below.
Water across much of Buckinghamshire is 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
- Resistance and insulation tests on the mat before, during and after tiling, with the readings recorded
- The electric mat or cable laid to the open floor, kept clear of where the WC, bath and fixed furniture will sit
- A check of the floor construction, the room's heat loss and where the thermostat and supply will go
- Bringing the system up to temperature gradually once the adhesive and grout have cured
Decisions to make first
Floor finish
Tiles and stone pass heat through well. LVT and vinyl can work, but check the maximum floor temperature the flooring maker allows.
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.

