Quote:
Originally Posted by Pondboy
Thanks for the input. I had my mind made up on water, but settling is probably the cause for the cracks. We had a crack on the Lanai deck (shortly after move in) and T&D said if it’s under 1/4” they consider it cosmetic and not structural. I’m sure they will stick with that.
There is a slope away from the lanai and it’s all birdcage covering the deck and pool. So no gutters.
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Water can certainly go "up" a wall. Water will always take the path or least resistance, whether that's up (wicking)or down
Your Lanai slab should have a vapor barrier under it. I can't imagine anyone pouring a slab on grade, without one. I would bet anything, the original construction documents provided a detail/standard for the slab, that showed compaction requirements, stone requirements, wire mesh & a vapor barrier. Whether the slab was actually constructed to spec, is a whole other story.
A crack of 1/4" is not cosmetic. If the crack is that large, it's an indication of poor workmanship and it's probably going to get worse, no matter what you do to try to cosmetically fix it.