Why the Grind Comes First
Nothing bonded to concrete is reliable until the surface has been opened up. A slab as it stands is closed, often sealed, and sometimes carrying a coat of something that never keyed properly in the first place. We take that back with diamond tooling rather than acid etching or a chemical stripper, because grinding gives a measurable profile and a chemical wash does not. The floor is then vacuumed rather than swept, so nothing is left sitting in the profile for the base coat to bridge over.
What comes off during that stage is also what tells us how the rest of the job runs. Cracks that were invisible under a sealer open up and get filled, low spots show themselves against a straight edge, and a slab holding moisture reads differently once it is bare. None of that is guesswork after the grind, which is why an Avondale quote is worth setting against the actual floor rather than against a square footage. If you want the whole build set out, here is what the preparation and each coat actually involve.
