- Postcode districts
- PE21
- Nearby
- Spalding, Sleaford and Skegness
- Guide price
- £650–£2,400
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Hard across most of Lincolnshire
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Boston?
In Boston, bathroom underfloor heating typically costs £650–£2,400 including VAT, based on East Midlands prices. Labour costs in East Midlands put local prices at about 4% below 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 Boston including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Boston
As well as Boston itself (PE21), we survey in Spalding, Sleaford and Skegness.
Homes in and around Boston vary, so we look at the floor, the walls and the water system before we price anything. We check door thresholds in Boston homes at the survey, because underfloor heating and new tiles raise the floor slightly. If your Boston bathroom has a cold tiled floor and no room for a bigger radiator, an electric mat under new tiles is the simplest answer.
Supplies across most of Lincolnshire 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 dial, programmable or smart thermostat, with the supply RCD protected, tested and certified by a qualified electrician
- Insulation boards over the subfloor, so heat goes up into the tiles rather than down into the joists or screed
- 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
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.
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.

