Tom I had two very large hangers one for Jet storage and one for maintenance. Both were coated with a seven coat epoxy process without the chips, similar to my garage (which had chips) in Scottsdale. Never had a real problem, even with skydrol. Which will eat the paint off most things. Maybe a little tire marking in the hanger, which cleaned off.
I had my garage floor done with the epoxy with chips about 2 years ago. I certainly can't get my Newell into it but I have had excellent wear out of it. I had concrete paint on the garage floor in my previous house in the 1980's and it was TERRIBLE. Worse than just leaving it bare. The multi-coat epoxy was one of the better improvements I have made to this house.
My employer uses Stonehard for the cleanroom floors. Bullet proof. But as others have stated it's about a five or six step process, and it's not cheap.
Richard and Rhonda Entrekin
95 Newell, 390 Ex caretaker
99 Newell, 512 Ex caretaker
07 Prevost Marathon, 1025
Maverick Hybrid Toad
Inverness, FL (when we're home )