Salem has a concrete personality all its own. A lot of these garages were poured before 1970 — some before 1940 — on slabs that have already lived through fifty freeze-thaw cycles and a rotating cast of cheap sealers. Add in the humidity coming off the Salem River and the way August storms sit over downtown, and you get a moisture profile that punishes shortcut coatings.
Our answer is the same one we’d give on a commercial bay: commercial-grade prep, full stop. We diamond-grind to clean concrete, chase every crack, test moisture before we mix, and tune the polyurea-polyaspartic system to the slab in front of us. It’s how a hundred-year-old Salem garage ends up with a floor that looks — and lasts — like a brand-new commercial install.