Well, this project came to a successful end so it seems. After many back and forth discussions and system evaluations, someone came up with a prep and product installation system that addressed the issue and is fully warranted. Everyone is happy and the job can finally get completed...except for the overall final cost, which the GC has to eat. Doubt seriously if the manufacturer of the original system will ever see a job from this GC ever again. Had they stuck with a proven system instead of trying to cut corners, all the delays and expense would have been avoided...expensive lesson learned.
Concrete Restoration Services, LLC