this post was submitted on 22 Jun 2026
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also cool air can not hold as much humidity as warm air. this means that the water (of the warm air in your attic) might condensate in your attic, so stuff might start to get rusty or moldy.
That's interesting! The carrying capacity of air Vs temperature is non-linear so if air in the crawlspace and attic were both near saturated, when mixed the result would probably be super-saturated / condensing.
Hence you get visible condensation from breathing and all sorts of exhausts.
That attic insulation is pretty sad, I doubt there is a vapor barrier or attic and roof venting.
Yes it's sad and old but there's about 8" of it. There's an attic vent in the roof and a vapor barrier in the crawlspace.