- Postcode districts
- BT51, BT52, BT55
- Nearby
- Limavady, Magherafelt and Derry
- Guide price
- £600–£2,200
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Soft across most of County Londonderry
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Coleraine?
As a guide, budget £600 to £2,200 including VAT for bathroom underfloor heating in Coleraine; your written quote will pin it down. Labour costs in Northern Ireland put local prices at about 12% below the UK guide figure. 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 Coleraine including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Coleraine
In Coleraine we cover BT51, BT52 and BT55; we also cover Limavady, 12.6 miles away, and Magherafelt.
In Coleraine, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. If your Coleraine home has a suspended timber floor, insulation boards under the mat stop heat disappearing into the void below. Whether your Coleraine bathroom is a small en-suite or a large main bathroom, the mat is sized to the open floor, not the whole room.
Water across much of County Londonderry is soft. Soft water is kind to grout, so mid-tone and darker grouts stay looking fresh. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- For wet systems, pipes in low-profile boards or screed connected to a manifold or single-zone kit, with any boiler work done by a Gas Safe registered engineer
- Bringing the system up to temperature gradually once the adhesive and grout have cured
- 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
Floor finish
Tiles and stone pass heat through well. LVT and vinyl can work, but check the maximum floor temperature the flooring maker allows.
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.
Rules that apply in Northern Ireland
Northern Ireland has no Part P, but the heating circuit should be designed, tested and certified to BS 7671, with RCD protection. Building control is not usually involved unless drainage or structural work is being done alongside it.

