Heard Sherwin's solid can last 5-7 years before peeling starts.

Doesn't even make a dent" - I mean, is it that deep? It's just face washing, not stripping paint off a house. @jenniferw82 has a point, this whole thing sounds like a lot.

Oh yeah I totally get that. I read something once from an old school mason who said the same thing about wood floats and sticky mixes. He swore it was the only way to keep the color consistent on restoration work because the wood doesn't pull the fine stuff up like steel does. It's funny how those old guys just knew stuff through trial and error, not like the manuals or YouTube videos we have now. Had to be in the situation to really appreciate it, you know? Makes you wonder how many other little tricks are just sitting around waiting for someone to be stuck enough to try them. Your boss sounds like he knew what he was talking about at least.