Underfloor heating in Derry

Postcode districts: BT47, BT48
Nearby: Limavady, Coleraine and Magherafelt
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 Derry?

In Derry, bathroom underfloor heating typically costs £600–£2,200 including VAT, based on Northern Ireland prices. 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

Thermostat and RCD-protected supply

Electric, larger room

£1,050–£1,950

Whole floor coverage

Wet system

£1,300–£2,600

Manifold or single-zone kit

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

Working in Derry

As well as Derry itself (BT47 and BT48), we survey in Limavady, Coleraine and Magherafelt.

Derry is a big place with every kind of home, from terraces to flats to new builds, so we never price from a photo alone. We check door thresholds in Derry homes at the survey, because underfloor heating and new tiles raise the floor slightly. Whether your Derry 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

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
Bringing the system up to temperature gradually once the adhesive and grout have cured
A floor sensor set between the heating runs and wired back to the thermostat

Decisions to make first

Thermostat

A simple dial thermostat, a programmable one with set times, or a smart thermostat you can control from your phone.

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 Derry: questions

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

Bathroom underfloor heating in Derry usually costs £600–£2,200 including VAT. Expect the lower end for a like-for-like job with standard products, and the upper end if things move or you choose premium finishes. Your quote is itemised and fixed in writing once agreed.

Do you cover BT47 and BT48 in Derry?

Yes. We cover all of Derry, including BT47 and BT48, and nearby Limavady, Coleraine and Magherafelt. Survey visits are free and arranged at a time that suits you.

Is the water hard in Derry?

Does bathroom underfloor heating in Derry need building control approval?

Building control in Derry 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.