- Postcode districts
- BR8
- Nearby
- Bexley, Dartford and Welling
- Guide price
- £800–£2,800
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Very hard across most of Kent
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Swanley?
Guide price in Swanley: £800–£2,800 including VAT, depending on the room and what you choose. We adjust the national guide for South East England, where prices are typically about 12% above the UK average. The figure depends on the size of the room, whether anything moves, and the products you pick.
Electric mat
- Mat under the tiles
Electric, larger room
- Programmable smart thermostat
Wet system
- Screed or low-profile boards
Guide prices for Swanley including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Swanley
In Swanley we cover BR8; we also cover Bexley, 3.2 miles away, and Dartford.
Swanley gets the same process as anywhere else: a free survey at your home and a written, itemised quote. If your Swanley bathroom has a cold tiled floor and no room for a bigger radiator, an electric mat under new tiles is the simplest answer. For Swanley homes having the bathroom floor replaced, underfloor heating adds one to two days to the fit.
Water across much of Kent 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 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
- Bringing the system up to temperature gradually once the adhesive and grout have cured
- The electric mat or cable laid to the open floor, kept clear of where the WC, bath and fixed furniture will sit
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.
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 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.
