Did the garage floor at work in 2005 , Municipal garage in snow country, when you put a salt shaker away for the night the melting snow and calcium additive will drip out on the floor overnite in such high concentration that the sealer the concrete supplier chose just for this job was gone in 3 months. We needed a new solution as salt in this concentration will spall concrete in weeks ,the RustOleum water base epoxy is not very chemical resistant , some brake Kleen , lacquer thinner and some other stuff will attack it, not good enough.
So we contacted the local Sherwin Williams who sent a man to the garage, he said the rest of the sealer had to come off , then a strong acid etch - the concrete needs to feel like 100grit sandpaper, if we weren't willing to do that prep then we shouldn't use their product. He guaranteed it would hold up to the salt as long as we repaired any damage we did that exposed the concrete (plows, forgetting to put mats for tire chains ,etc.) Long story short 7+ years later the floor still looks good , the salt still drips on it and grows crystals an inch thick by the following day and it doesn't hurt a thing :thumbsup: Welding and torching will put some marks on it but it doesn't destroy the integrity of the coating, I have yet to see any chemical make any type of mark on it, it's not really easy to chip, we did have to put a board under the metal bandsaw so the drops don't chip it.
Sherwin Williams Armor Seal 1000HS
It's a good bit more expensive than RustOleum , it really needs 2 coats , the first coat needs reduced 10% so it flows into the pores better , it stinks pretty bad while your putting it down, it's oil base and probably bad for the environment and it's the only thing I'll ever use on a garage floor until they quit making it:thumbsup:
Ray
^)