Sweet shim
That’s the bottom of the vinyl flooring you’re looking at.
Mold
Hmm
Bright white mold, soft wood

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Stain from mold
Dubious new post... right over this recently sealed crack.
You can’t see it but this pillar already has a split all the way through

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Hmm.
Alrighty.
Shimmed with sheetrock

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More shims.
Rotted joist
More mold stain

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These were pushed up against the south wall... they’re soaking wet.
Recently sealed
Lots of colors

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Soaking wet.