A belated thanks for the answers, guys. I did end up etching the vertical surfaces with the etchant that came in the EpoxyMaster kits (well, the etchant from one of the two kits) and scrubbing with a stainless-steel wire brush (hand brush--all my equipment is still in storage in California...)...
Hi all! My first post here. Thanks to all who participate in this forum, which has greatly helped in my own project to this point.
My wife and I recently bought a house with a "2-1/2 car" garage--two actual stalls with individual doors and a raised area to the side that is as wide as a stall...