Petts Wood and Park Langley ground floor rebuilds
A ground floor rebuild in a larger Bromley house runs in a set order. First the existing floor is dug out. Next comes insulation with a membrane over it, then the heating engineer fixes the pipe circuits and checks them under pressure before we screed over everything. We check the insulation, membrane and edge strip before pouring, or supply them where needed, because a missing edge strip lets the screed lock against the walls.
On these floors, the key question is how much screed sits above the pipes. With liquid screed that is a minimum of 25mm, so the finished floor is around 45 to 50mm thick, while a hand-laid cement floor wants roughly 45mm above them. Because a pumped mix wraps every pipe and leaves no air gaps, the room heats up quicker, yet a properly compacted sand and cement floor does the job when that is what the specification asks for.
Petts Wood dates from the late 1920s, when Basil Scruby developed it with larger homes east of the railway and tighter streets to the west. A rebuild like that is the moment to settle the finished floor height, because the old floor is already out. Detached houses make up 18% of the borough's homes, and in the bigger ones the heated floor can run through kitchen, dining and living space in one sweep.
Large heated areas need their bay and joint layout planned around the heating zones before the pour, so each zone can move without cracking the screed above it.
Heating up a new Bromley screed without cracking it
The first heat-up is where screeds over heating get damaged. A calcium sulphate floor can normally take its first heat roughly 7 days after pouring, but give a sand and cement floor 21 days as a minimum. In both cases the heating goes on gently, with the flow temperature raised in small steps over days, never switched straight to full. You get a clear commissioning plan from us; the controls themselves are for your heating engineer.
Retrofits in older Bromley houses bring a different problem: height. Adding insulation, pipes and screed to an existing floor can raise it above what the doors and thresholds allow. Liquid screed helps, because its thinner build-up leaves more room for insulation, and our Bromley liquid screed page covers the depths. In some houses it makes more sense to excavate the old floor further down.
Heated garden rooms raise the same questions on a smaller scale, and the screed still needs its full cover over the pipes.
Liquid or hand-laid, the surface must end up flat enough to take tiles, LVT or engineered boards. Our screed thickness guide lists the depths for each build-up, and the Bromley anhydrite flow screed page explains the calcium sulphate option in detail.
Underfloor Heating Screed prices in Bromley
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 Bromley
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 Bromley
On the map, Bromley sits east-south-east of Slough, about 31.8 miles from our base in a straight line (postcodes including SE20, BR3, TN16 and BR1), next to Swanley (5.5 miles), Lewisham (5.7 miles), Croydon (5.8 miles) and Bexley (6.9 miles).
More on underfloor heating screed, part of our screeding services.