06/10/2026
What's the biggest surface prep mistake you've seen on a commercial or industrial project?
We'll go first: coatings applied over mill scale that was never properly removed. Looks fine on day one. By month four, you've got widespread delamination and the whole job is coming off.
We've walked job sites where the prep didn't come close to the coating spec, and the client had no idea until the failure showed up.
Drop your answer in the comments. What have you seen go wrong when prep was skipped or rushed?