- Postcode districts
- AL7, AL8
- Nearby
- Hatfield, Hertford and St Albans
- Guide price
- £750–£2,600
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Very hard across most of Hertfordshire
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Welwyn Garden City?
For Welwyn Garden City, our guide range for bathroom underfloor heating is £750 to £2,600 including VAT. Prices in East of England run at about 6% above 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.
Electric mat
- Insulation board
Electric, larger room
- Electrician sign-off
Wet system
- Pipes linked to the heating
Guide prices for Welwyn Garden City including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Welwyn Garden City
In Welwyn Garden City we cover AL7 and AL8; we also cover Hatfield, 2.8 miles away, and Hertford.
In Welwyn Garden City, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. For Welwyn Garden City homes having the bathroom floor replaced, underfloor heating adds one to two days to the fit. We check door thresholds in Welwyn Garden City homes at the survey, because underfloor heating and new tiles raise the floor slightly.
Water across much of Hertfordshire is very hard. Hard water leaves white marks on dark grout and gloss tiles, so matt finishes and stain-resistant grout are the practical choice. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- A check of the floor construction, the room's heat loss and where the thermostat and supply will go
- A dial, programmable or smart thermostat, with the supply RCD protected, tested and certified by a qualified electrician
- Insulation boards over the subfloor, so heat goes up into the tiles rather than down into the joists or screed
- Resistance and insulation tests on the mat before, during and after tiling, with the readings recorded
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.
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.
Rules that apply in England
In England, a new circuit for underfloor heating is notifiable under Part P, and so is connecting it to an existing circuit in a room with a bath or shower. The electrician either self-certifies through a competent person scheme or the work is notified to building control.
