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Discussion Starter · #1 ·
Hi all,

I am in the process of laying down flooring in my utility room and ran across an interesting issue.
There appears to be a large gap between the bottom plate of an exterior wall and the slab. It appears too small to be a drain? It doesn’t run the length of the wall as far as I know. The gap is at least 3 inches deep

Am I ok to just fill it with concrete, or poly caulking?

1950s house, slab on grade, no basement or crawlspace.

Thanks!
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Naildriver
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Are you located in the Rockies? If so it could be your floating foundation. Helps to know locations.
 
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