Don't buy that junk @ Home Depot / Lowes
I purchased the epoxy stuff and it will NOT stick if the surface stays moist for any time.
I have a 500sq ft carport, open on 2 sides, eastern exposure. I wash the vehicles in it. The stuff that was down before was old red house paint. It looked awful. I got some muratic acid, 2 gallons. Poured it straight on the floor and brushed it in with a broom. I let it sit for 20 min before hosing it off really well. I let it dry over night. I then sanded the entire floor with 180 grit.
I washed it with degreaser and rinsed it well. Finally on the third day I blew it off with the blower and painted it. It looked great. It has looked great up until 2 weeks ago. Now it has spots that moisture is getting under the epoxy and bubbles up. Needless to say it peels up and when one spot peels it does nothing but spread. It looks like white trash again..lol I've re-applied it, re-sanded, etc, etc.
Just get a professional to do it, I plan to, and see who ever offers the best warranty.
