- Postcode districts
- WD2, WD24, WD25
- Nearby
- Watford, Bushey and Rickmansworth
- 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 North Watford?
Guide price in North Watford: £750–£2,600 including VAT, depending on the room and what you choose. We adjust the national guide for East of England, where prices are typically about 6% above the UK average. 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 North Watford including VAT. Your itemised written quote after the free survey is the price that counts.
Working in North Watford
We work right across North Watford — WD2, WD24 and WD25 — and in neighbouring Watford and Bushey.
In North Watford, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. Where a North Watford home already has a heat pump, or the heating is being altered, a wet underfloor system is worth comparing with electric. Whether your North Watford 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 Hertfordshire are 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 dial, programmable or smart thermostat, with the supply RCD protected, tested and certified by a qualified electrician
- 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
- Resistance and insulation tests on the mat before, during and after tiling, with the readings recorded
Decisions to make first
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.
Floor heating and towel rail
Underfloor heating warms the room; a towel rail dries towels. Many bathrooms have both, and a dual-fuel rail keeps working in summer when the boiler is off.
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.

