- Postcode districts
- LL28, LL29, LL31
- Nearby
- Llandudno, Rhyl and Prestatyn
- Guide price
- £650–£2,300
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Moderately hard across most of Clwyd
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Colwyn Bay?
For Colwyn Bay, our guide range for bathroom underfloor heating is £650 to £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.
Electric mat
- Thermostat and RCD-protected supply
Electric, larger room
- Whole floor coverage
Wet system
- Manifold or single-zone kit
Guide prices for Colwyn Bay including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Colwyn Bay
As well as Colwyn Bay itself (LL28, LL29 and LL31), we survey in Llandudno, Rhyl and Prestatyn.
Homes in and around Colwyn Bay vary, so we look at the floor, the walls and the water system before we price anything. We check door thresholds in Colwyn Bay homes at the survey, because underfloor heating and new tiles raise the floor slightly. Whether your Colwyn Bay 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 Clwyd is moderately hard. Mid-tone grout and matt tiles hide the odd water mark better than dark grout and high gloss. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- Resistance and insulation tests on the mat before, during and after tiling, with the readings recorded
- The electric mat or cable laid to the open floor, kept clear of where the WC, bath and fixed furniture will sit
- A floor sensor set between the heating runs and wired back to the thermostat
- Bringing the system up to temperature gradually once the adhesive and grout have cured
Decisions to make first
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.
Thermostat
A simple dial thermostat, a programmable one with set times, or a smart thermostat you can control from your phone.
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.

