Underfloor heating in Windsor

Postcode districts: SL4
Nearby: Slough, Egham and Staines
Guide price: £800–£2,800
Typical time on site: 1–2 working days (added to a fit)
Water: Hard across most of Berkshire
Survey: Free, at your home

What does bathroom underfloor heating cost in Windsor?

For Windsor, our guide range for bathroom underfloor heating is £800 to £2,800 including VAT. Prices in South East England run at about 12% 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.

Typical

Electric mat

£800–£1,700

Thermostat and RCD-protected supply

Electric, larger room

£1,350–£2,500

Whole floor coverage

Wet system

£1,700–£3,400

Manifold or single-zone kit

Guide prices for Windsor including VAT. Your itemised written quote after the free survey is the price that counts.

Working in Windsor

As well as Windsor itself (SL4), we survey in Slough, Egham and Staines.

Homes in and around Windsor vary, so we look at the floor, the walls and the water system before we price anything. We check door thresholds in Windsor homes at the survey, because underfloor heating and new tiles raise the floor slightly. For Windsor homes having the bathroom floor replaced, underfloor heating adds one to two days to the fit.

Water across much of Berkshire is 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

The electric mat or cable laid to the open floor, kept clear of where the WC, bath and fixed furniture will sit
Bringing the system up to temperature gradually once the adhesive and grout have cured
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

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.

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.

More about underfloor heating

Underfloor heating in Windsor: questions

How much should I budget for bathroom underfloor heating in Windsor?

Bathroom underfloor heating in Windsor usually costs £800–£2,800 including VAT. Expect the lower end for a like-for-like job with standard products, and the upper end if things move or you choose premium finishes. Your quote is itemised and fixed in writing once agreed.

Is the water hard in Windsor?

Who handles building control for bathroom underfloor heating in Windsor?

Building control for Windsor is handled by the local council or an approved inspector. If your job needs sign-off — for example a new circuit, new drainage or a new extractor where there was none — we tell you at the survey and handle the notification as part of the work.

How long does bathroom underfloor heating take?

Allow 1–2 working days (added to a fit) on site for most jobs, plus the lead time for products after you approve the quote. We give you a day-by-day plan before work starts in Windsor.

Can underfloor heating go under a bath or shower tray?

No. Electric underfloor heating must not be laid under baths, shower trays, WCs or fixed furniture, because trapped heat can damage the cable and the item above it. It covers the open floor you stand on, and in a wet room it can run under the tiled shower area.