- Postcode districts
- SO50, SO53
- Nearby
- Hedge End, Southampton and Romsey
- Guide price
- £800–£2,800
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Hard across most of Hampshire
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Eastleigh?
Guide price in Eastleigh: £800–£2,800 including VAT, depending on the room and what you choose. Prices in South East England run at about 12% above the national guide, mainly because of labour rates. 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 Eastleigh including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Eastleigh
We work right across Eastleigh — SO50 and SO53 — and in neighbouring Hedge End and Southampton.
Homes in and around Eastleigh vary, so we look at the floor, the walls and the water system before we price anything. If your Eastleigh home has a suspended timber floor, insulation boards under the mat stop heat disappearing into the void below. We check door thresholds in Eastleigh homes at the survey, because underfloor heating and new tiles raise the floor slightly.
Supplies across most of Hampshire 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
- A floor sensor set between the heating runs and wired back to the thermostat
- 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
- The electric mat or cable laid to the open floor, kept clear of where the WC, bath and fixed furniture will sit
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.
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.
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.

