I just finished putting down half of my performanceepoxy 15 gallon kit about a week ago than stumbled upon this thread after wondering why the sun was already turning my top clear coat yellow.. Anyways, epoxy coat adequately resolved my issue (although I wish I was warned once the problem unearthed) by sending another base coat which I can apply on top of the one side cured after sanding, and than add to the other side after applying the two original coats in succession.
Just want to make sure I do this right.
40grit sand paper, than wipe down with denatured alcohol. and it should look like the gloss is removed
It seems the consensus here was that adding some type of urethane clear coat on top was the best idea? Even if its not required.. I am wondering is this for aesthetics or does it need to be done to protect the epoxy, because there will be three layers on when all is said and done so it should be adequately thick.
I will be reading through this thread again before I start to apply the new stuff so any updates are appreciated.
Here is a picture of what happened with my floor. it is outside the garage door which may not have been a wise idea, but it happened in 2-3 days, and it also was starting to yellow inside the garage door. Also, those are not flakes, but dirt that blew in from the driveway so hopefully I can cover them up with coat three.
http://i49.tinypic.com/2hwjlv5.jpg