Underfloor heating in Swansea

Postcode districts: SA1, SA2, SA5
Nearby: Briton Ferry, Neath and Llanelli
Guide price: £650–£2,300
Typical time on site: 1–2 working days (added to a fit)
Water: Soft across most of West Glamorgan
Survey: Free, at your home

What does bathroom underfloor heating cost in Swansea?

As a guide, budget £650 to £2,300 including VAT for bathroom underfloor heating in Swansea; your written quote will pin it down. Labour costs in Wales put local prices at about 7% below the UK guide figure. The figure depends on the size of the room, whether anything moves, and the products you pick.

Typical

Electric mat

£650–£1,400

Thermostat and RCD-protected supply

Electric, larger room

£1,100–£2,000

Whole floor coverage

Wet system

£1,400–£2,800

Manifold or single-zone kit

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

Working in Swansea

In Swansea we cover SA1, SA2 and SA5; we also cover Briton Ferry, 5.4 miles away, and Neath.

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

Supplies across most of West Glamorgan are 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

A dial, programmable or smart thermostat, with the supply RCD protected, tested and certified by a qualified electrician
Resistance and insulation tests on the mat before, during and after tiling, with the readings recorded
Insulation boards over the subfloor, so heat goes up into the tiles rather than down into the joists or screed
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

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.

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 Wales

In Wales, the Welsh Part P also makes a new underfloor heating circuit notifiable, and it covers more bathroom electrical work than the English version. A registered electrician handles the notification.

More about underfloor heating

Underfloor heating in Swansea: questions

How much does bathroom underfloor heating cost in Swansea?

Bathroom underfloor heating in Swansea usually costs £650–£2,300 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 SA1 in Swansea?

Yes. We cover all of Swansea, including SA1, SA2 and SA5, and nearby Briton Ferry, Neath and Llanelli. Survey visits are free and arranged at a time that suits you.

Is the water hard in Swansea?

Who handles building control for bathroom underfloor heating in Swansea?

Building control for Swansea is handled by the local council or an approved inspector. If your job needs sign-off — for example a new circuit, new drainage or a new extractor where there was none — we tell you at the survey and handle the notification as part of the work.

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.