I recommend a local supplier or manufacturer if possible. My experience with Sherwin Williams is they lack the knowledge for floor coatings. Most of their guys sell house paint so you need someone who specializes in floors. Where are you located?
That system should be extremally durable, especially with the protective clear coat on top. Did anything get dragged across the floor that could've caused the issue? It looks like gauge marks in some of those areas. I've been on this board for 3-4 years now and there's been a lot of positive...
In Houston area, there's a lot of 1 day floors we're having to compete with. We fixed a lot of these as well. I think both systems you mentioned are fine as the both start with an epoxy. Smart to have tined poly for UV on random broadcast.
Epoxy basecoat is the best way, followed by polyaspartic topcoat. Polyaspatics are made to be topcoats and their adhesion direct to concrete is not nearly as good as epoxy. Epoxy also has better moisture barrier. Be very careful of companies who offer "lifetime warrinties" or say "my product...
For an aircraft hangar, the best system is 1 coat of epoxy primer, 1 intermediate coat of epoxy, and a finish coat of solvent based 2 part urethane (long open time). Stay away from polyaspartics and polyureas on hangar floors.
Yes, the epoxy adheres better to concrete so if prep isn't perfect epoxy sticks better. Also depending on type of epoxy, it has longer working time then most polyurea basecoats. That system i linked is just for visual but gives you an idea of a higher end system. Thanks
I suggest diamond grinding to be on the safe side. Epoxy is a lot more forgiving as a primer than polyurea so I would make sure epoxy is the primer. Then use a high end flake kit like this: https://www.garageflooringllc.com/product/pro-series-full-broadcast-epoxy-system-awf-pro/#!
Full flake is easier then metallic. I've read a lot of reviews on epoxy vs polyurea as basecoat and general consensus says epoxy is best option due to better adhesion and moisture resistance. There's several vendors here that have some awesome DIY Flake Kits.
There’s thousands of floors done every year with no issues but every now and then you see complaints about lingering odor in the garages. It’s rare but if it were me i would wait just to be on the safe side.
Repairs are going to be expensive but they are necessary. Epoxy, although expensive, is an excellent material to use for patching due to its tensile strength.
Check out Hellfire from Legacy : https://www.legacyindustrial.co/products/hellfire-concrete-coating/
Shea has a great write up on it - https://allgaragefloors.com/hellfire-floor-coating-review/
All of the vendors on here supply high quality products. Here's a few of their metallic pages.
https://www.legacyindustrial.co/products/legacys-metallic-epoxy-coating-kit/
https://www.garageflooringllc.com/metallic-epoxy-flooring-systems/...
I used the Armorpoxy system on my floor almost 2.5 years ago and it looks great. I used 2 part primer, 100% solids epoxy with gray pigment pack, 2 part military grade clear. Floor has held up very well. Car tires do not effect the floor at all.