fintstone: Underneath the bedroom is a garage. There is no crawlspace under the house - it is on a slab / concrete foundation.
And yes - I checked and didn't find any leak around the baseboard radiators - the pip runs alongside one wall - connecting to the bathroom. I will check that again though.
Quote:
Originally posted by red-beard
If the temp in the room was constant, and the RH rose from 40% to 60%, there is moisture coming from somewhere, and a lot of it. It means that the amount of moisture in the air rose by 50% in a matter of hours. Keep looking for the source.
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The temp in the room wasn't a constant - it did warm up by daybreak, probably 10 degrees or so.
And whenever I've turned off the dehumidifier, the humidity level would slowly (over hours) start to rise...
-Z