Fitting heated floors into Marlow's older houses
Just 9% of homes in Marlow went up after 2000. In anything older, the doors, the stairs and the neighbouring rooms already fix the finished floor level, and a heated floor has to fit underneath it.
Take a pre-1919 house whose uninsulated floor is coming up anyway: the dig-out makes space for insulation, pipes and screed, so it is the obvious moment to add heating. If the old floor is staying, the build-up is tighter, and a pumped screed often helps because it can be laid thinner.
Over the pipes, liquid screed needs a cover of at least 25mm, giving roughly 45 to 50mm overall. Because it flows round every pipe and traps no air, the floor warms more quickly and runs more efficiently. Sand and cement calls for about 45mm of cover and careful compaction, as any void beside a pipe turns into a cold, weak patch. How the pump gets screed to the room is explained on our liquid screed page for Marlow.
Settle the levels before a slab or insulation is ordered. Measure down from the existing floor, take off the finish and the screed, and see what remains for pipes and insulation. We go over edge strip, membrane and insulation before pouring, and if any are missing, our insulation and membranes service can supply them.
Heated extensions on Marlow semis and garden rooms
Semis are 24% of Marlow's homes, and a back extension on one is a common spot for a heated kitchen. Which screed to use depends on the room. In a big open kitchen, pumped screed is quick and flat; for a shower room on the same circuit, choose a cement based screed, since calcium sulphate should not go where floors may get wet.
Garden rooms can have underfloor heating too, provided the base is insulated and the building is weathertight before we pour. They often stand well away from the road, so tell us how a hose or barrow can reach yours when you ask for a price.
Commission slowly. A calcium sulphate floor in a Marlow extension can usually have its heating switched on once a week has passed, at around 7 days, whereas sand and cement has to sit for at least 21. Start cool, lift the temperature a notch at a time across several days, and hold it before making any change. Your heating engineer decides the flow temperatures, and we write down what the screed needs from that schedule. Warming the floor is no substitute for testing its moisture before the finish goes on, as our guide to screed drying sets out.
Underfloor Heating Screed prices in Marlow
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 Marlow
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 Marlow
On the map, Marlow sits west-north-west of Slough, about 6.3 miles from our base in a straight line (postcodes including SL7 and SL6), next to High Wycombe (4.1 miles), Maidenhead (4.2 miles), Henley-on-Thames (6 miles) and Beaconsfield (6.3 miles).
More on underfloor heating screed, part of our screeding services.
