The SW product worked out great. I did my parent's new garage and a friend of mine did his new garage at the same time. Both turned out well.
It isn't exactly cheap at about 80$ a gallon but you get what you pay for
. It is a 2 part product and each "kit" consists of 1 gallon of part A and part B so a "kit" is 160$ for the 2 gallons. The kit does not include flakes or a clear cost but both could be purchased if you want. I just like not having the flakes. Makes finding that little washer I drop a little easier
I felt the coverage rate was much better than I had expected. I had planned on using 3 kits to do 2 coats for the garage that is roughly 24ft X 34ft. The second coat is optional but I did that on my basement and it makes all the difference. Any paint will soak into the concrete inconsistently due to the varying surface texture of the concrete. The second coat leaves a very uniform coating and well worth the time. I ended up only needing a little over 1 kit(~2.4 gallons) to do the first coat. The remainder of the second kit (~1.6 gallons) was just enough to do the second coat 24hrs later.
The last 2 floors I've done I used a high solids epoxy such as this and they have held up very well. Probably should add they were both new concrete. It really is all in the prep though. I swept good, and scrubbed with a good degreaser and rinsed 2 times. I then etched it with a ~4:1 mixture of water and muratic acid. I was prepped to go to the moon with rubber boots, thick rubber gloves, goggles and appropriate respirator. I would pour some of the mixture on the floor and scrub it in with a deck brush. Let it set for 10min or so and rinse off. I then performed that same process again. Then rinsed the floor a few times really well. Let it dry for couple days or so. I applied the epoxy starting at daybreak because I wanted the sun to be up so the bugs wouldn't come to the light in the garage and get in the paint. It is also much cooler in the mornings
. Just check the humidity per the directions.
I'll be there this week and will snap some pics.