Grinding where new slabs meet old in Godalming
A diamond grinder works like a very coarse sander for concrete. Heads set with industrial diamonds spin against the floor and cut the top away in thin passes, so the operator can take down a single ridge without touching the rest of the room.
The step at an extension join shows how that helps. When an Ockford Ridge house gains a rear extension, the new insulated floor rarely finishes at precisely the height of the original, and the edge of one slab can stand proud of the other by a few millimetres. Grinding the high side back, then feathering the join, gives one continuous surface for a single run of flooring.
Any older slab can carry trowel marks, a lip between bays cast on different days, or a patch that set proud of the concrete around it, and we grind floors like these across the town, from Westbrook and Wheelerstreet to Holloway Hill. Only about 6% of Godalming homes were built between 2000 and 2014, but even a younger floor can have a lip where a doorway bay was poured separately.
What grinding cannot do is fix a slope. If a floor falls away across the whole room or dips in the middle, cutting the high side down to match would remove far too much. The plan then is to grind the local high spots and finish with self levelling compound over the whole room or a new screed. Grinding too deep can also leave a screed thinner than its safe minimum, so we measure before we cut.
Old adhesive, paint and dust in Godalming rooms
Lift an old carpet or a sheet of vinyl and the floor beneath is rarely clean. Black bitumen glue, patches of old compound, tile adhesive ridges and floor paint all stop a new layer from bonding properly. Grinding takes them back to sound concrete or screed, ready for priming and then compound, adhesive or a thin latex base for vinyl. On a calcium sulphate screed, the same approach takes the weak laitance off.
Garages are another case. Before a garage becomes a room, the slab usually carries oil stains and old paint that have to come off before membranes or a new screed go on, as our garage conversion floor guide explains.
Dust is the risk to manage. Concrete, screed and tile all contain silica, and grinding them produces fine respirable crystalline silica dust, which is harmful to breathe. Every grinder we run is connected to an extraction unit, and we seal doorways and protect the rooms next door, which is important in a lived-in house anywhere from Catteshall to Frith Hill.
To be clear about our role: we are a contractor. We do not sell or hire grinders or diamond tooling, and we do not lay resin or polished concrete. For large areas or thick coatings, shot blasting as part of floor preparation may be quicker.
How we price floor grinding in Godalming
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 Godalming
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 Godalming
Godalming is about 24 miles south of our Slough base as the crow flies, with postcodes including GU7 and GU8. The nearest towns to it are Guildford (4.1 miles), Aldershot (7.8 miles), Haslemere (7.9 miles) and Farnham (8.3 miles).
More on floor grinding, part of our screeding services.
