Many garages have a small 6-12” high curb wall around the perimeter. The question is can you epoxy paint that. The answer is yes. But you have to allow for sufficient amount of material to do it. Curb walls are notorious for using up a lot more material than normal. So when you calculate the square footage of the curb wall you should at the very least double it, we like to triple it to be safe, especially if it’s cinder block.
If the size of your garage is 550 square feet, you should not order just one Armor Chip Kit since that is right at the max coverage. You would need to order the Add On Half Kit. With the half kit you will have plenty of material to do your curb wall. If you don’t have a curb wall and your floor size is close to or just over the max coverage, the other option is to purchase the Epoxy Primer. The primer will add an extra layer of epoxy so that you end up with a thicker coating and it also will increase the coverage of the epoxy since it is now going over a sealed surface.
To prep your curb wall you can simply scrub some etching solution on it and rinse well. Prep on the curb wall is not as critical as it is on the floor since you will not be driving or walking on it. You can apply the color flakes to the curb wall by tossing them underhanded at the curb in small quantities. Using a brush is usually the best option to apply the epoxy.
You can do the curb wall first and cut in the floor edges at the same time. We would do a cut in strip of at least 6” on the floor so that you can have at least a 4” strip of wet epoxy without flakes in it. This lets you overlap onto the epoxy without chips in it for a smoother finish when you do the floor.
Topcoating your curb wall is optional. Again since there is not traffic load a topcoat is not necessary. But if you ordered a sufficient amount of product you should have plenty of topcoat on hand. So you might as well go ahead and use all the topcoat.