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Watched a 20 year old slab turn to dust after a bad pressure wash
Was doing a driveway in Phoenix last month and the owner asked if I could touch up the pad from 2005. Looked fine from the street but once the power washer hit it, the cream just peeled off like sunburned skin. Turns out a handyman had sealed it with some cheap acrylic back in 2019 and it trapped moisture. The whole thing spalled out in a 4x4 section before I could even grab my grinder. Anyone else run into mystery coatings that wreck a good slab?
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the_avery1mo ago
Man I used to think any sealer was better than none, figured it was protecting the surface from the sun and all that. But after seeing trapped moisture blow out a slab that woulda lasted another 20 years, I completely flipped on that. Cheap paint-on stuff can do way more harm than good if it aint breathable, and now I tell folks to just leave bare concrete alone unless they know exactly what theyre putting down.
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