- Postcode districts
- FK3
- Nearby
- Falkirk, Alloa and Bathgate
- Guide price
- £650–£2,400
- Typical time on site
- 1–2 working days (added to a fit)
- Water
- Soft across most of the Forth Valley
- Survey
- Free, at your home
What does bathroom underfloor heating cost in Grangemouth?
For Grangemouth, our guide range for bathroom underfloor heating is £650 to £2,400 including VAT. We adjust the national guide for Scotland, where prices are typically about 4% below 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 Grangemouth including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Grangemouth
In Grangemouth we cover FK3; we also cover Falkirk, 2.5 miles away, and Alloa.
Grangemouth gets the same process as anywhere else: a free survey at your home and a written, itemised quote. For Grangemouth homes having the bathroom floor replaced, underfloor heating adds one to two days to the fit. Whether your Grangemouth bathroom is a small en-suite or a large main bathroom, the mat is sized to the open floor, not the whole room.
Most of the Forth Valley is supplied with soft water. 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
- Resistance and insulation tests on the mat before, during and after tiling, with the readings recorded
- Insulation boards over the subfloor, so heat goes up into the tiles rather than down into the joists or screed
- A check of the floor construction, the room's heat loss and where the thermostat and supply will go
- For wet systems, pipes in low-profile boards or screed connected to a manifold or single-zone kit, with any boiler work done by a Gas Safe registered engineer
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.
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 Scotland
Scotland has no Part P. Underfloor heating added during a straight bathroom refit rarely needs a building warrant on its own, but it must be installed, tested and certified to BS 7671 with RCD protection.

