Pipe cover on St Neots new builds and extensions
Homes built between 2000 and 2014 are 16% of St Neots, and building continues at Wintringham and Monkfields. New homes like those going up along Cambridge Road commonly take flowing screed over wet underfloor heating. On a new plot the drawings usually fix the screed type and depth. On an extension, the choice is ours to recommend.
First, how much screed goes over the pipes. With liquid screed that means 25mm or more above them, so the floor usually ends up 45 to 50mm deep, and because it flows, it surrounds each pipe without trapping air that would hold the heat back. Sand and cement wants roughly 45mm over the pipes, which makes for a deeper floor. Skimp on that cover and cracks can open along the pipe runs. Overdo it and the room takes longer to heat up.
Detached houses make up 28% of St Neots homes. Where one of those gains a heated extension, the new floor usually has to meet the existing level, which limits depth and favours a pumped liquid screed. A utility or boot room with heating, where the floor may get wet, suits hand-laid sand and cement over pipes instead.
We inspect the insulation, membrane and edge strip ahead of the pour, and can provide any of them. The pipes must already be fixed and pressure tested. The finished floor should be flat enough for tiles, LVT and engineered wood.
Commissioning the heating in a Wintringham home
The day the heating first goes on matters more than people expect. Calcium sulphate can normally have gentle heat put through it once it is about 7 days old. Sand and cement has to sit for 21 days or more first. After that, the temperature is raised slowly in steps and held, so the screed dries evenly instead of cracking. You get that schedule from us on paper, and your heating engineer follows it.
On any new build, this is where a programme can slip, because fitters want to start before the screed is ready. A heated calcium sulphate screed can be force dried, but the laitance still needs sanding and the moisture still needs testing before flooring. Our guide to how long screed takes to dry sets realistic expectations.
Retrofitting heating into an older St Neots house is harder. If the old floor stays in place, insulation, pipes and screed may simply not fit unless the level goes up. We will look at that before recommending anything. The same service covers underfloor heating screed in Huntingdon, about 8 miles away.
Underfloor Heating Screed prices in St Neots
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 St Neots
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 St Neots
As the crow flies, our yard in Slough is about 50.7 miles from St Neots, which lies to the north-north-east. Postcodes here include PE19, and Sandy (6.9 miles), Huntingdon (8 miles), Biggleswade (9.8 miles) and Bedford (10.5 miles) are close by.
More on underfloor heating screed, part of our screeding services.
