Liquid screed for rear extensions on Southwick semis
In Southwick, the floor that suits liquid screed most clearly is a single-storey rear extension: a kitchen, dining and family room in one open space. That is the shape where a pumped screed pays off. It flows out from the hose, levels itself, and sets into a dense, flat floor.
Everything starts from the level of the floor already in the semi. We work back from it to set the depth of insulation and screed, so the new room steps through with no lip at the doorway. Floated over insulation in a house, liquid screed starts at about 35mm. With heating pipes beneath, it must cover them by 25mm or more, which usually makes 45 to 50mm in all, and it pairs naturally with screed over underfloor heating in a new kitchen.
Flatness is the main advantage. Surface regularity to SR1 or SR2 is readily achievable, so LVT, large tiles and engineered boards can go down with little extra preparation. It barely shrinks, so the extension needs only a few joints, far fewer than a cement floor laid by hand.
You can have it as a calcium sulphate mix or a cement based one. Calcium sulphate shrinks very little, while the cement version goes into rooms that could get wet. Once we know which rooms you are doing, we will tell you which to use.
On published 2026 UK figures it costs £24 to £31 per m². For a straight comparison with the traditional method, see the guide to liquid screed vs sand and cement.
Getting the pump to Southwick flats and back gardens
Flats make up 22% of Southwick homes, and an upper floor flat needs a different plan from a house. The pump line may have to run up a stairwell or through a window, and the building's management may set rules about access and protection. Tell us which floor the flat is on and how the hose would get there, and we can price it properly.
For a house, the mixer and pump usually park on the street or the drive. The hose then runs through a side passage, garage or the house to the room at the back. Semis often have a side path, which helps. Terraces may not, so a run through the house, with floors protected, is common.
Once poured, the room stays shut for the next 24 to 48 hours. Light foot traffic is then fine, but drying before flooring takes much longer, at roughly 1 day per mm for the first 40mm and slower after that. Ventilate the room and test before laying anything.
For longer or more awkward hose runs, see our screed pumping service. Just along the coast, see liquid screed in Shoreham-by-Sea.
Liquid Screed prices in Southwick
Liquid screed: £24 to £31 per m² supplied and laid (MyJobQuote, August 2026), so £960 to £1,240 for 40 m². MyJobQuote does not say whether these figures include VAT. See our floor screeding cost guide or screed calculator.
Who lays your liquid screed in Southwick
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.
Liquid Screed from Slough to Southwick
On the map, Southwick sits south-south-east of Slough, about 51.4 miles from our base in a straight line (postcodes including BN42), next to Shoreham-by-Sea (1.5 miles), Brighton and Hove (4.2 miles), Worthing (6 miles) and Burgess Hill (9.6 miles).
More on liquid screed, part of our screeding services.
