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I keep seeing guys skip the moisture test on concrete slabs and it's going to cost them big.
Just finished a job in Tampa where the GC swore the slab was cured for 90 days. I ran my meter anyway and it was still reading over 5%. If I'd just glued that LVP down, it would have bubbled in a year. A $20 tool and ten minutes can save you a $15,000 callback. Who taught you to trust a calendar over a meter?
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jennifer3586mo ago
My meter saved me on a Phoenix job last month. The slab was six months old but still reading 4.5% moisture.
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the_jennifer5mo ago
My buddy Mike in Jacksonville had a slab that sat for almost a year. He was ready to install this expensive engineered hardwood. His meter read 4.8% right in the middle of the room. He waited another month, tested again, and it finally dropped. That floor would have been a total wreck. He still talks about how close he came to a disaster.
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mary_schmidt766mo ago
That calendar doesn't account for the local water table or drainage. A slab in a low spot or near a high water table can act like a sponge for MONTHS longer than the specs say. Seen it trap moisture over a year in coastal areas.
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