Underfloor heating in Llanelli

Postcode districts: SA15
Nearby: Gorseinon, Swansea and Ammanford
Guide price: £650–£2,300
Typical time on site: 1–2 working days (added to a fit)
Water: Soft across most of Dyfed
Survey: Free, at your home

What does bathroom underfloor heating cost in Llanelli?

Our guide price for bathroom underfloor heating in Llanelli is £650–£2,300 including VAT. 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 Llanelli including VAT. Your itemised written quote after the free survey is the price that counts.

Working in Llanelli

We work right across Llanelli — SA15 — and in neighbouring Gorseinon and Swansea.

In Llanelli, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. If your Llanelli home has a suspended timber floor, insulation boards under the mat stop heat disappearing into the void below. If your Llanelli bathroom has a cold tiled floor and no room for a bigger radiator, an electric mat under new tiles is the simplest answer.

Water across much of Dyfed 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

The electric mat or cable laid to the open floor, kept clear of where the WC, bath and fixed furniture will sit
A dial, programmable or smart thermostat, with the supply RCD protected, tested and certified by a qualified electrician
A check of the floor construction, the room's heat loss and where the thermostat and supply will go
Insulation boards over the subfloor, so heat goes up into the tiles rather than down into the joists or screed

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 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 Llanelli: questions

How much does bathroom underfloor heating cost in Llanelli?

Bathroom underfloor heating in Llanelli 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 SA15 in Llanelli?

Yes. We cover all of Llanelli, including SA15, and nearby Gorseinon, Swansea and Ammanford. Survey visits are free and arranged at a time that suits you.

Is the water hard in Llanelli?

Who handles building control for bathroom underfloor heating in Llanelli?

Building control for Llanelli 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.