Shop and unit refits on Purley Way and Valley Park
When a retail unit is refitted, the old floor finish comes up and leaves the slab in a mess. Carpet tile adhesive, rubber backing, painted walkways and patch repairs all sit on the concrete, and a new floor needs them gone before anything is glued down.
Valley Park and the other Purley Way retail parks are the sort of site where a unit may be refitted when its occupier changes. Shops in the Whitgift Centre and Centrale, at the heart of the town centre, are no different: a refit there starts by getting back to sound concrete.
Grinding does it by cutting. Diamond segments set in rotating heads remove the top of the slab or screed in shallow passes. That takes away adhesive and paint, the weak laitance on a new screed, trowel marks, and the ridge left where two pour bays meet at slightly different heights. The surface left behind is open and clean, so primer and compound can bond to it.
Depth needs care. Grinding too much from a screed can leave it below its minimum thickness, so where the build-up is not known, we find out before the heavy passes start. On very large areas, or under thick coatings, shot blasting or scarifying may be quicker, and both fall under our floor preparation work.
The Purley Way masterplan also plans for new industrial floorspace, and any units built under it will still need laitance and lips taken off before their tenants' finishes go down. Resin and polished concrete are laid by other specialists; our part is the prepared floor.
Extensions and garages in Sanderstead and Kenley
In houses, grinding solves smaller, very visible problems. In Purley, Sanderstead and Kenley, larger detached houses suit kitchen extensions, and where the new slab meets the original floor the join rarely comes out perfectly flat. A raised edge of a few millimetres across a wide opening will telegraph through LVT or large tiles. We grind the lip down, then the area is skimmed with levelling compound in Croydon so the floor reads as one surface.
Semi detached houses are 25% of the borough's homes. When the garage of a semi becomes living space, its slab may carry oil and paint that block any bond, so it is ground before insulation and screed go in.
Grinding has a clear limit. It takes off local high spots; it does not straighten a floor that slopes or sags across the room. On a floor like that we grind the high points and then level or screed.
Dust is controlled throughout. Concrete, screed and tile all contain silica, and grinding them throws up respirable crystalline silica dust. Extraction is attached to the machine for every pass, and adjoining rooms are screened off. Grinders and tooling are not something we sell or hire. For the same service a few miles away, see concrete floor grinding in Sutton.
How we price floor grinding in Croydon
A fixed written price within 24 hours, once we know the area and what has to come off. See our floor screeding cost guide.
Who grinds your concrete floor in Croydon

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.
Concrete Floor Grinding from Slough to Croydon
As the crow flies, our yard in Slough is about 26.8 miles from Croydon, which lies to the east-south-east. Postcodes here include CR0, CR5, CR8 and CR7, and Sutton (3.7 miles), Caterham (5.7 miles), Bromley (5.8 miles) and Merton (6.3 miles) are close by.
More on floor grinding, part of our screeding services.