Grinding the join between Chorleywood extensions and houses
A grinder spins diamond segments against the floor and shaves the top off a slab or screed a thin layer at a time. That makes it the tool for local faults: a ridge where two pours meet, a trowel mark left proud, a hump along an old wall line, or the edge of an extension slab standing a few millimetres above the house floor.
That last fault follows naturally from Chorleywood's housing. Only 7% of Chorleywood's homes date from 2000 to 2014, and the large majority are older still, so an extension is usually joined to a floor laid decades before it. The two rarely finish at exactly the same height. Grinding takes the high side down so the floors meet cleanly, and a thin levelling layer can then blend them.
There is a clear limit. Grinding removes high spots; it cannot lift low ones. A floor that falls across a whole room, or dips in the middle, will still fall after grinding. The usual answer is to grind the high points and bring the rest up with compound or new screed, so the grinder and the levelling work as a pair. We also watch depth: a screed ground too hard can end up thinner than its minimum, so on a floating screed we measure before taking much off.
The surface left behind is clean, open and sound, which is what a primer needs to grip. From there it can take a levelling compound, a thin latex screed over the ground surface, a new bonded screed, or flooring laid direct where the base is already true.
Old adhesive, garages and dust in Chorleywood homes
Lifting an old carpet or vinyl in a Chorleywood house can reveal a floor still coated in black bitumen glue, foam backing or tile adhesive. New primers and compounds will not bond reliably to that residue, so it has to come off. Diamond grinding cuts through it, and through thin floor paint, leaving bare concrete or screed. The same pass removes the weak laitance skin on a calcium sulphate screed before priming.
Garages are another candidate. A garage floor being turned into a room may carry oil stains, paint and a dusty, worn top. Grinding cleans and opens it before insulation or a new screed goes on, and our garage floor screed guide covers the build-up that follows.
Dust is the serious part. Cutting into concrete, screed or tiles releases fine respirable crystalline silica, a dust that should not be breathed. We grind only with extraction connected to the machine, seal doorways to the rest of the house and keep the work area contained.
We are a contracting team, so the grinders stay with us and are never sold or hired out, and the same goes for the diamond tooling. Resin coatings and polished concrete are specialist finishes we do not lay. For thick coatings or very large areas, shot blasting may suit better, and it sits under our floor preparation service.
How we price floor grinding in Chorleywood
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 Chorleywood
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 Chorleywood
As the crow flies, our yard in Slough is about 10 miles from Chorleywood, which lies to the north-north-east. Postcodes here include WD3, and Rickmansworth (2.5 miles), Amersham (4 miles), Chesham (5.2 miles) and Watford (5.4 miles) are close by.
More on floor grinding, part of our screeding services.
