if you are planning on doing a build (welding, grinding etc) in your garage, i would stay far away from the rustoleum stuff. in fact, i would probably stay away from epoxy as a whole unless someone has had a better experience.
i bought a kit from lowes about 5 years back that was the solvent based 2-part rustoleum and advertised as industrial grade. when i contacted their techs they said it was far superior to their 1-part water based line. being really cheap at the time, $99 bucks and i was out the door with their 2.5 gallon kit in the packaged 5 gallon bucket. i spent days prepping the floor prior to rolling it out. once rolled, it looked good, but had a dull finish. i contacted them and they said that a second coat would solve the dull finish, and they even said since they had a 100% guarantee that the second kit was on them! the second coat did cure a lot of the issues, but i decided to go a little further. i purchased their clear top coat and put that on as well. it looked GOOD! really good....... for about 3 years.
the clear is now all yellowed and anywhere the sun contacts it on a regular basis its now flaking up. the grey base is still VERY solid with no peeling, and the only time i take chunks out is when the concrete it self breaks from dropping something. but, the welder has ruined the floor. the hot sparks stick and leave little black marks. those that have seen a welder in operation know how many sparks get thrown.
i really dont want to rain on someones parade, i just dont want someone to end up in the same situation as me. if you park on your floor the rustoleum seems like a good product as long as you dont put their clear on it (unless they reforumlated). it really has held up well as far as adhesion. i just hate the yellowed look now.
these were right after i was done about 5-6 years ago.....
and heres an example of what it looks like today. the last couple inches sit outside the garage door and dont have clear anymore and you can see how the color has yellowed and gotten all scuffed up. its still better than nothing, but i will redo them when the car is done.
