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Liquid Screed · London

Liquid Screed in Harrow

K & B lays pumped liquid screed across Harrow in new flats, open-plan extensions and large ground floors. A lot of it goes into the new building on the old Kodak land. At Harrow View, Barratt London and Hyde have built about 1,150 homes and L&Q around 700 more, and new flats there and in central Harrow use liquid screed with acoustic layers. The same material also suits the extensions going onto the borough's semis.

Harrow View and central Harrow: liquid screed in flats

Flats in purpose-built blocks account for 26% of Harrow's homes, and 16% of all homes were built in 2000 or later. New flats at Harrow View and in central Harrow use liquid screed laid over acoustic layers, and Wealdstone also has newer flats on its High Street and George Gange Way.

The acoustic part matters in flats. Sound from footsteps travels through a floor into the flat below, so the screed floats on a resilient layer rather than bonding to the slab. Liquid screed suits that build-up because it flows out evenly over the layer without compaction, so the layer is not damaged or pushed out of place.

On large floor areas it is quick. A whole apartment floor can be done in one visit, with the mix running from the mixer down the hose and finding its own level. Because it shrinks less than a sand and cement floor, it needs far fewer joints, and thin finishes get the SR1 or SR2 regularity they ask for without much trouble.

A floating pour in a Harrow flat begins at about 35mm deep, and at about 40mm on a commercial floor. Where heating pipes run underneath, keep a minimum of 25mm of screed above them. Liquid screed can be calcium sulphate based or cement based, and the choice depends on where it goes. Our anhydrite screed page for Harrow explains the calcium sulphate specification. For a comparison with traditional screed, read which screed to choose.

Pumping into a Pinner or North Harrow semi

Inter-war semis in Pinner and North Harrow are often extended at the rear or side, and an open-plan kitchen extension is a natural fit for liquid screed. It covers the whole floor in one go, lays flat across a wide room and is usually walkable within 24 to 48 hours.

With a front drive, the pump and mixer set up off the road and the hose is laid down the side of the house to the new room. Where there is no side access, it can come through the house, with floors protected along the way. Upper floor rooms can be reached through a window or up the stairs.

Drying still takes time. Walkable and ready for flooring are two very different things. Each of the first 40 millimetres needs around a day to dry, deeper screed is slower again, and the moisture meter, not the calendar, picks the flooring date.

For very large pours, our screed pumping service page explains how the pump works, though we do not hire out pumps. Nearby, see liquid screed in Bushey.

Liquid Screed prices in Harrow

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 Harrow

Long finished floor screed ready for floor coverings
Long finished floor screed ready for floor coverings.

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 Harrow

Harrow is about 13.5 miles east-north-east of our Slough base as the crow flies, with postcodes including HA3, HA8, HA1 and HA5. The nearest towns to it are Bushey (3.8 miles), Brent (4.6 miles), Watford (5 miles) and Ealing (5.3 miles).

More on liquid screed, part of our screeding services.

FAQs

Liquid Screed in Harrow: your questions

Can liquid screed go over an acoustic layer in a Harrow flat?

Yes. New flats in Harrow use exactly that build-up. The screed floats on the resilient layer, with an edge strip isolating it from the walls, so footstep noise is reduced. The layer must be laid flat and taped at the joints so the screed cannot leak through.

Why choose liquid screed for a Harrow extension?

One visit covers the whole extension floor flat, the mix wraps the underfloor heating pipes without leaving voids, and you can usually walk on it after 24 to 48 hours. There are fewer joints to form than in a sand and cement floor. For a small room or a wet area, hand-laid screed may still be the better fit.

How long does liquid screed take to dry before flooring?

Up to 40mm deep, budget a day of drying per millimetre; past that, each extra millimetre takes longer. Underfloor heating can speed up calcium sulphate screed from about 7 days. Before wood, LVT or tiles go down, a hygrometer test confirms the floor is dry enough for the product being laid.

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Liquid Screed near Harrow

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