I did that type of coating years ago. And it failed too. Let a garage flooring guy do it right. Warrantied for life(whatever that means). Six years on my Polyaspartic coating and it still looks new!

http://garagefloorcoating.com

IME issues with those coatings are due to either people doing it over concrete that's still a little green or doing it over old floors that had a lot of stains on them.  I think dust and the coating not having any tooth to bite into may also play a role.  The age and condition of your floor should be perfect for the best possible outcome. 

TKOPerformance wrote:

IME issues with those coatings are due to either people doing it over concrete that's still a little green or doing it over old floors that had a lot of stains on them.  I think dust and the coating not having any tooth to bite into may also play a role.  The age and condition of your floor should be perfect for the best possible outcome. 

They grind the concrete before applying the finish. No more acid wash.

I used to oversee installation of these type floors in aircraft factories, so this is nothing new.  Only difference is the conditions for a successful installation were much more favorable in my new garage than they were in WWII vintage factories with torn up and oil stained floors that had been abused for decades.

Why clearcoat?
  Must be a different type of epoxy process  than mine which was done 30 or so years ago.

MS wrote:

I used to oversee installation of these type floors in aircraft factories, so this is nothing new. Only difference is the conditions for a successful installation were much more favorable in my new garage than they were in WWII vintage factories with torn up and oil stained floors that had been abused for decades.

Before I retired three years ago, we had both of our hangars in Seattle done by a contractor. The "new" hangar was built in 1985. The "old" hangar in 1967. The contractor sanded both floors that had an older coating applied down to the concrete, then pressure washed the floors. They then applied sealant to all the joint lines and waited until the sealant had cured. They then applied the epoxy coating. We waited for the time period they said to wait until it cured, then we moved an aircraft onto it. It sat there overnight and when we pulled the aircraft out, the coating pulled up where the wheels had been sitting.They had to come back a patch a few spots because of that and bubbles. Seems even the "pros" can screw up sometimes too if they don't  properly prepare the floors. That "old" hangar had probably 50 years of oil, hydraulic fluid, jet fuel, grease, etc soaked into it. "Proper preparation prevents piss poor performance..." 
 

Hey Ron fixed that for ya🤪

Proper preparation prevents piss poor performance...possibly!

I think this one also applies:
80 % of PAINT is PAIN

They are grinding up the old coating with a huge machine that has three grinding wheels. It removes everything down to concrete in just one pass.   Impressive removal tool.  Looks just like the machine in the pictures posted previously.

Poor little fellow.

Can they build the clear to preserve up over him? That would make an interesting conversation piece for you if they could.

My garage floor is 45 years old and works just like when it was new. Never had a coat of anything because I knew it would drive me crazy. fixing it all the time. Floor still sweeps up great and survives the grinding, welding, painting, and all the mistakes and all I do is sweep or wipe up with solvent. I love all those smooth shiny floors in my buddies shops, but I figure I leave too big of wake behind.