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Hot take: Rushing the trowel gave me a cracked slab
I used to start finishing as soon as the concrete lost its shine. On a recent job, the surface ended up with fine cracks everywhere. An old timer showed me I was trapping moisture underneath. Now I always wait for the bleed water to fully go away. Listen up, that patience stops a lot of problems down the road.
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mia_jones477mo ago
Man, doesn't that just make you want to kick yourself? I did the exact same thing on a small driveway pad last summer. It looked perfect when I left, but a week later there was this ugly map of fine cracks all over it. The worst part is knowing it was totally preventable if I'd just waited another twenty minutes for the bleed water to go away. That feeling of having to explain it to the homeowner is the worst. Solid advice to just wait it out.
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jamesr347mo ago
You really hit it with "that feeling of having to explain it to the homeowner." I used to be the guy rushing to get that glassy finish, thinking a little bleed water was fine. Then I had a garage floor do exactly what wadew51 said, trapping moisture, and it spiderwebbed everywhere after. Seeing that one job fail changed my whole approach. Now I watch for that sheen to completely vanish, even if it means the crew grumbles about losing the light. It's just not worth the callback.
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william8647mo ago
Yeah that's the worst, seeing a perfect job go bad over something so simple. I started using a little garden sprayer with water to slow the set on hot days, just a light mist, and it gives you way more time to work without trapping bleed water. @wadew51 is totally right about moisture getting stuck, it's a killer. It feels like you're wasting time waiting for the sheen to go, but man, those callbacks are way more painful. Now I just tell the crew we're done when the floor says we're done, not when the sun goes down lol.
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