- Postcode districts
- HP11, HP12, HP13
- Nearby
- Marlow, Amersham and Amersham on the Hill
- 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 High Wycombe?
For High Wycombe, our guide range for bathroom underfloor heating is £800 to £2,800 including VAT. 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
- Mat under the tiles
Electric, larger room
- Programmable smart thermostat
Wet system
- Screed or low-profile boards
Guide prices for High Wycombe including VAT. Your itemised written quote after the free survey is the price that counts.
Working in High Wycombe
We cover every part of High Wycombe, including HP11, HP12 and HP13, and nearby Marlow (4.3 miles) and Amersham (6.3 miles).
High Wycombe has a wide mix of house ages, so the survey is where we spot old lead pipework, weak joists or a tight soil stack. If your High Wycombe bathroom has a cold tiled floor and no room for a bigger radiator, an electric mat under new tiles is the simplest answer. We check door thresholds in High Wycombe homes at the survey, because underfloor heating and new tiles raise the floor slightly.
Supplies across most of Buckinghamshire are 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
- Bringing the system up to temperature gradually once the adhesive and grout have cured
- 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
- A check of the floor construction, the room's heat loss and where the thermostat and supply will go
Decisions to make first
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.
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.
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.

