"I followed the instructions. I chemical etched the floor, and used a power sander. And a power washer. First application looked so so, and I was dissatisfied. I expected it to be beautiful. So, within the window for a second coat, I purchased all new epoxy (approx. 6 car garage space, so not cheap) and reapplied.
This time it was gorgeous. Looked perfect. We did not drive on it for longer than required, just to be sure.
I think if it was in a basement or walk area, it might still look good. But, don't drag anything bigger than a duffle bag, or you will get scuff marks. So, the first problem I had was scrapes and marks from pushing dog kennels or trailers around the garage.
Then, Wisconsin winter set in. We are now about one year post-application. This winter was brutal. It was below zero for months, and my cars brought in lots of salt and water. Now that winter is over, the floor is failing all over the place. I have dozens of spots the size of quarters or larger where it has just come up, and other places where I can see it coming up. It is all in the places where the water and salt were worst. To some degree it is where car tires rolled, but mostly it appears the cold, water and chemicals overcame the floor.
I am going to wind up having the floor professionally ground, and redone, I think. It will wind up costing me many more times what it would have to just have it professionally done in the first place, not to mention all the work. I would not buy this product for any kind of high demand environment. Admittedly, this was a harsh year for a number of reasons, but this stuff is supposed to be made for exactly that. I don't know that interior latex would have fared any worse. Very disappointed."