Pipe cover and floor height in Warminster extensions
A heated floor is only as good as the screed around the pipes. Every pipe has to be fully surrounded with no air gaps, and there must be enough depth on top for strength and an even spread of heat.
With liquid screed, that means 25mm over the pipes as a minimum, usually 45 to 50mm in total. Hand-laid screed wants about 45mm on top of the pipes, which makes the whole floor deeper. On a new extension that hardly matters, since the build-up is drawn up from day one. Lift an existing floor to add heating, though, and height gets tight, and a thinner pumped liquid screed for heated floors is often what lets the floor finish under the existing door thresholds.
In Warminster, 29% of homes are detached, and a bigger plot tends to mean a bigger project, such as a large kitchen extension or garden room heated wall to wall. There, a flowing screed has the extra benefit of covering a wide area with few joints.
What sits under the pipes matters just as much. Without insulation, the heat drains down into the ground rather than up into the room. On the day we look over the insulation, the membrane and the strip around the walls before any screed goes in, and our insulation and membranes work can supply them if needed.
Switching the heating on in a Warminster home
Turning the system up too early is the usual way heated screeds go wrong. A calcium sulphate screed will normally take low heat from about 7 days. Give hand-laid cement screed at least 21 days. Either way, the temperature climbs gradually over several days, holds there, and only then goes to its normal setting. You get that schedule on paper, which means your plumber and your household are both working from one plan.
Across the new streets planned for the West Warminster Urban Extension, builders will be pricing liquid screed over underfloor heating plot after plot, with the heating part of the design from the outset. How a controlled heat-up fits with drying is covered in our guide to screed drying times.
Whatever covering goes on top sets how flat the finished surface must be, and tiling, vinyl planks and timber each have their own tolerance. As a guide, published 2026 prices for liquid screed over heating pipes sit between £20 and £35 a square metre. Around 6 miles away, the same work is on offer as underfloor heating screed in Frome.
Underfloor Heating Screed prices in Warminster
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 Warminster
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 Warminster
On the map, Warminster sits west-south-west of Slough, about 70.2 miles from our base in a straight line (postcodes including BA12), next to Westbury (3.9 miles), Frome (6.4 miles), Trowbridge (8 miles) and Melksham (11.8 miles).
More on underfloor heating screed, part of our screeding services.
