- Postcode districts
- EC1, EC1A, EC1M, EC1R, EC1V, EC1Y + 6 more
- Nearby
- Archway, Tottenham and Walthamstow
- Guide price
- £900–£3,100
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Very hard across most of Greater London
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Islington?
Guide price in Islington: £900–£3,100 including VAT, depending on the room and what you choose. Prices in London run at about 25% 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
- Insulation board
Electric, larger room
- Electrician sign-off
Wet system
- Pipes linked to the heating
Guide prices for Islington including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Islington
As well as Islington itself (EC1, EC1A, EC1M and 9 more postcode districts), we survey in Archway, Tottenham and Walthamstow.
In Islington, many bathrooms are in flats or converted houses, so we check lease consents, access and the floor below before we price. Where a Islington home already has a heat pump, or the heating is being altered, a wet underfloor system is worth comparing with electric. If your Islington bathroom has a cold tiled floor and no room for a bigger radiator, an electric mat under new tiles is the simplest answer.
Most of Greater London has very 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 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
- 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
Decisions to make first
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.
Floor finish
Tiles and stone pass heat through well. LVT and vinyl can work, but check the maximum floor temperature the flooring maker allows.
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.
