- Postcode districts
- DT1
- Nearby
- Weymouth, Yeovil and Poole
- Guide price
- £700–£2,600
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Hard across most of Dorset
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Dorchester?
Guide price in Dorchester: £700–£2,600 including VAT, depending on the room and what you choose. The figure depends on the size of the room, whether anything moves, and the products you pick.
Electric mat
- Thermostat and RCD-protected supply
Electric, larger room
- Whole floor coverage
Wet system
- Manifold or single-zone kit
Guide prices for Dorchester including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Dorchester
We cover every part of Dorchester, including DT1, and nearby Weymouth (7.2 miles) and Yeovil (17.8 miles).
Dorchester gets the same process as anywhere else: a free survey at your home and a written, itemised quote. If your Dorchester bathroom has a cold tiled floor and no room for a bigger radiator, an electric mat under new tiles is the simplest answer. Where a Dorchester home already has a heat pump, or the heating is being altered, a wet underfloor system is worth comparing with electric.
Most of Dorset has hard water. 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
- A check of the floor construction, the room's heat loss and where the thermostat and supply will go
- The electric mat or cable laid to the open floor, kept clear of where the WC, bath and fixed furniture will sit
- A dial, programmable or smart thermostat, with the supply RCD protected, tested and certified by a qualified electrician
Decisions to make first
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.
Insulation board thickness
Thicker boards warm up faster and lose less heat downwards, but raise the floor; the right choice depends on the door threshold and the next room.
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.

