Concrete Grinding & Surface Preparation in Dublin CA - a slab ready to hold its coating

Most people call us because a coating is peeling, old paint or sealer is in the way, or a newer slab is too smooth to hold anything. At Cornerstone Dublin Epoxy Flooring we prep floors in Dublin and in cities across the Tri-Valley and the East Bay, and the price mostly comes down to the size of the floor, what's on it now and how many cracks need filling. A thick old coating may need stripping and removal before we grind, which adds work. The schedule turns on the slab itself, because new concrete and damp concrete both have to wait, and I give you your own figure in a written estimate once I've seen the floor.

I start by asking what's going on top, because a thin sealer needs a much lighter grind than a thick epoxy or an overlay, and the wrong depth either way causes trouble later. Before anyone turns on a grinder, we check the slab's age and moisture, since fresh concrete has to wait and a damp slab can push a coating right off. Then our crew grinds the floor with diamond tooling, works the edges and corners where a big machine can't reach, fills cracks and low spots that would show through, and vacuums the whole floor so nothing sits between the concrete and the new layer. I'd rather take the time here than watch a nice coating let go.

Grinding is usually the first half of a bigger job. If you want a clear protective coat on bare concrete, concrete sealing goes on once the slab is clean and open. If the surface is worn, pitted or uneven, concrete resurfacing and overlays need a deeper grind so the new layer locks in, and we plan the prep around that from the start.

Dublin's Building & Safety Division handles permits for most construction and repair work, and its list names jobs like patios, decks and retaining walls but not concrete grinding, so whether your job needs one isn't settled by that list alone. Permit rules depend on the city or county your address is in, so we check with that office before work starts, and if a permit is needed we take care of the paperwork as part of the job. Work that reaches a sidewalk or a driveway approach is different, because the city requires an encroachment permit for any work in the public right of way, and on most Dublin streets that right of way runs about eight feet back from the face of the curb. If you want to ask the city yourself, Building & Safety is at 925-833-6620.

Around Dublin we see a lot of garage slabs with a factory sealer or an old roll-on paint that's started to flake, and both have to come all the way off before anything new will stick. We run into the same garages and patios on jobs in Pleasanton and San Ramon, and we handle them the same way, grinding past the old film to clean concrete and checking it before anything goes down.