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Underfloor Heating Screed · Somerset

Underfloor Heating Screed in Frome

For wet underfloor heating in Frome, we cover the pipes with liquid screed or with sand and cement, depending on the system. Owners of newer homes near Adderwell who extend often want the new floor heated and matched to the existing level, and that depends on getting the pipe cover and build-up right. Laying and testing the pipes is down to your heating engineer. We check insulation and edge strip, lay the screed to depth and give you a written warm-up schedule.

Matching heated extension floors near Adderwell

In all, 21% of Frome's homes were built since 2000, and many of the newer estates are around Adderwell. When one of these homes gains an extension, the aim is usually a heated floor that meets the existing house with no step, so the screed depth is worked out from the existing finished floor. A step at the doorway is hard to correct once the screed is down.

The screed is the part that spreads the heat. A liquid pour wants 25mm or more over the pipes, so the floor works out at 45 to 50mm, and it surrounds them completely with no voids. Sand and cement needs around 45mm above them, so that floor is deeper. Pumped screed is covered on our Frome liquid screed page.

Frome's large stock of 1970s to 1990s terraces and semis is where most kitchen extensions take place. A heated floor in a new kitchen needs insulation laid under the pipes, so the heat goes up into the room rather than down into the ground.

By pour day, the pipes should be clipped and pressure tested, insulation fitted tight and edge strip run round every wall so the screed can expand when warm. We check each of these and can supply the membrane and edge strip. K & B does not install heating pipes; that stays with your heating engineer.

Heated floors in Frome's older houses

Retrofitting underfloor heating in an older Frome house is harder because depth is tight. In a 17th or 18th century house, fitting insulation, pipes and screed usually means taking the old floor out altogether, and where the house is listed, that needs consent first.

The thinnest workable build-up is usually a liquid screed at the lower end of its range. In a bathroom or anywhere that may get wet, sand and cement over the pipes is used instead.

Commissioning has to be gradual. Calcium sulphate can normally have the heat on at around 7 days, starting low and turning it up gently. Sand and cement has to wait 21 days or more. Rush the warm-up and the screed can crack, along with any tiles laid on it. Ask your heating engineer to agree the warm-up schedule with your flooring supplier before the finish is ordered.

The newest homes, built from 2015 on, are 8% of the stock. Where one already has a heated ground floor, the extension build-up is set to match its finished level. To see how insulation, pipes and screed stack up, read the screed depth guide.

Underfloor Heating Screed prices in Frome

Liquid screed over underfloor heating: £20 to £35 per m² supplied and laid (trade2base, June 2026), so £700 to £1,230 for 35 m². trade2base gives these figures excluding VAT. See our floor screeding cost guide or screed calculator.

Who lays your underfloor heating screed in Frome

Underfloor heating pipes covering a large room before screeding
Underfloor heating pipes covering a large room before screeding.

K & B Screeding’s own team, led by director Donatas Bardisevicius. Founded 2019, company 12298780.

See what customers say in our Google reviews and on our testimonials page.

Underfloor Heating Screed from Slough to Frome

As the crow flies, our yard in Slough is about 75.4 miles from Frome, which lies to the west-south-west. Postcodes here include BA11, and Westbury (6.3 miles), Warminster (6.4 miles), Trowbridge (7.9 miles) and Bath (10.6 miles) are close by.

More on underfloor heating screed, part of our screeding services.

FAQs

Underfloor Heating Screed in Frome: your questions

Can I tile straight onto underfloor heating screed?

Wait until the screed has dried out fully and the heating system has been commissioned. Calcium sulphate also needs its laitance sanding off and a primer before tiling. With sand and cement, keep the heating off for the first 21 days at least. Tile with a flexible adhesive suited to heated floors.

Is liquid or sand and cement better over underfloor heating?

Liquid tends to win because it wraps every pipe without air pockets, needs less depth above them and can take heat earlier. Sand and cement is the pick for wet rooms or anywhere a cement base is required. Which is right comes down to the room, how much depth you have and the floor finish.

How much does screed over underfloor heating cost?

For 2026, published UK figures place liquid screed over heating pipes from £20 up to £35 per square metre. Your figure then depends on how big and deep the floor is, access, and whether we provide insulation. Once we have plans or room sizes, a written, fixed price follows within 24 hours.

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Underfloor Heating Screed near Frome

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