My brother told me to never trust a 'flat' concrete slab without checking moisture first

He said that after a job in Tampa where a glue-down LVP failed in under a year. I ignored him on a 1200 sq ft basement install last month, thinking the slab felt dry. Glued it down, looked perfect. Woke up two days later to bubbles and lifting planks along the entire west wall. Had to tear out about 300 sq ft of material on my own dime. Who else has gotten burned by a slab that seemed fine?

3 comments

3 Comments

lindag3320d ago

Was it one of those new fast drying pours? My neighbor had a patio done that felt bone dry in a week, but the guy said to wait a full month before sealing it. He sealed it after two weeks because it looked ready, and the whole thing ended up with this weird white haze that wouldn't come off. It makes you wonder what's going on underneath even when the top feels okay.

anderson.piper20d ago

Reminds me of my cousin's garage floor, lindag33.

knight.dylan20d ago

My buddy in Phoenix glued engineered hardwood to his sunroom slab last fall. It felt completely dry to the touch, no dark spots or anything. Six months later the boards started cupping so bad you could trip on them, and the installer said it was all from moisture under the surface.