Check the air bricks are open and free from debris, that's if you have
them. Old house or new house? When was it built and what was the type
of construction. Have chimneys been taken out recently? Might be worth
having a survey for damp done by a registered surveyor.
First, you want to look for a newsgroup for your country. USA? (it's
The climate may not help. Whereabouts are you?
It may just be condensation. Do you dry washing indoors? Take showers?
Cook? Open windows?
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