Underfloor heating in Belfast

Postcode districts: BT1, BT2, BT3, BT4, BT5, BT6 + 8 more
Nearby: Newtownabbey, Lisburn and Newtownards
Guide price: £600–£2,200
Typical time on site: 1–2 working days (added to a fit)
Water: Soft across most of County Antrim
Survey: Free, at your home

What does bathroom underfloor heating cost in Belfast?

As a guide, budget £600 to £2,200 including VAT for bathroom underfloor heating in Belfast; your written quote will pin it down. Prices in Northern Ireland run at about 12% below 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.

Typical

Electric mat

£600–£1,300

Insulation board

Electric, larger room

£1,050–£1,950

Electrician sign-off

Wet system

£1,300–£2,600

Pipes linked to the heating

Guide prices for Belfast including VAT. Your itemised written quote after the free survey is the price that counts.

Working in Belfast

In Belfast we cover BT1, BT2, BT3 and 11 more postcode districts; we also cover Newtownabbey, 4.4 miles away, and Lisburn.

In a city the size of Belfast, parking and access for a skip are worth sorting before the start date — we will ask at the survey. We check door thresholds in Belfast homes at the survey, because underfloor heating and new tiles raise the floor slightly. Whether your Belfast bathroom is a small en-suite or a large main bathroom, the mat is sized to the open floor, not the whole room.

Most of County Antrim is supplied with soft water. 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

The electric mat or cable laid to the open floor, kept clear of where the WC, bath and fixed furniture will sit
Insulation boards over the subfloor, so heat goes up into the tiles rather than down into the joists or screed
A check of the floor construction, the room's heat loss and where the thermostat and supply will go
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

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.

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.

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.

More about underfloor heating

Underfloor heating in Belfast: questions

How much should I budget for bathroom underfloor heating in Belfast?

Bathroom underfloor heating in Belfast usually costs £600–£2,200 including VAT. Where you land in that range depends on the size of the room, whether the layout changes and the products you choose. After the free survey you get an itemised written quote, and the price is fixed in writing once the layout and products are agreed.

Do you cover BT1 in Belfast?

Yes. We cover all of Belfast, including BT1, BT2, BT3, BT4 and 10 more postcode districts, and nearby Newtownabbey, Lisburn and Newtownards. Survey visits are free and arranged at a time that suits you.

Is the water hard in Belfast?

Does bathroom underfloor heating in Belfast need building control approval?

Building control in Belfast is run by the local district council. Where approval is needed, for example for new drainage, we tell you at the survey and handle it as part of the job.

Is electric underfloor heating expensive to run in a bathroom?

Running cost depends on the heated area, the insulation under the mat, how long it runs and your electricity tariff. As an example, a 150 W per m² mat covering 3 m² draws 450 W, so two hours a day uses about 0.9 kWh. A timer and floor sensor stop it running when nobody is using the room.