Heated kitchen extensions on Kidlington's estates
The post-war and late twentieth century semis that make up so much of Kidlington are the classic setting for a heated extension. The existing floor sets the finished level, so the new build-up has to fit beneath it: insulation, pipes, and then screed over the top. Settling those depths before the new slab is cast saves trouble later, because a floor that finishes high cannot easily be lowered.
Pipe cover decides the screed thickness. Poured liquid wants 25mm or more above the loops, so a total of 45 to 50mm is normal in these kitchens. With sand and cement the cover alone is about 45mm, giving a deeper floor. Because liquid screed is thinner and flows around each pipe with no air pockets, it warms up faster and spreads heat more evenly, which suits a new kitchen well.
Garden rooms and garage conversions follow the same principles on a smaller scale. A converted garage often has height to play with, since its slab tends to sit lower, so either screed can work.
Newer houses are often designed around heating from the start. 7% of Kidlington's homes were built from 2015 onwards, and where a new plot's drawings name a calcium sulphate grade, the grades are explained on our anhydrite flow screed page for Kidlington. For the pumping side, see liquid screed for Kidlington extensions.
Commissioning a heated floor in Kidlington
The heating cannot go straight on. Gentle warmth can usually go into a calcium sulphate floor a week after pouring, whereas sand and cement sits unheated for 21 days or more. Commissioning then starts at a low temperature and rises in steps, and the written schedule we hand over lets the heating engineer and the flooring fitter follow the same plan.
On the morning we turn up, the loops should be clipped and pressure tested over insulation, membrane and edge strip, and we go round checking each of them before mixing starts. K & B does not install the heating pipes, so the heating engineer needs to be booked first. If the membrane or insulation is not yet in, our insulation and membranes team can supply and fit them.
Flooring over a heated screed needs a base that is both flat and dry. Tiles, LVT and engineered wood each have a maker's moisture limit, and gentle heating helps the screed get there once commissioning is under way. The screed thickness guide sets out depths for each build-up if you are still at the design stage of a Kidlington extension.
Underfloor Heating Screed prices in Kidlington
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 Kidlington
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 Kidlington
Kidlington is about 34.1 miles north-west of our Slough base as the crow flies, with postcodes including OX5. The nearest towns to it are Oxford (5 miles), Bicester (7.8 miles), Witney (8.8 miles) and Abingdon-on-Thames (10.5 miles).
More on underfloor heating screed, part of our screeding services.
