I just did mine this past spring. Used a two part epoxy with 70% solids. You can go higher but its tougher to work with. The product was from cloverdale paints. I used 4 single gallon pails to do two coats on a 22x24 garage. Make sure you get the same colour batch. Basically I did half the garage, then the other waited a couple of days and did the second coat. You can't too long between coats or you won't get a good bond (max 7 days I think). I also recommend a carbon filter half mask, though the pink elephants were nice.