Quote:
Originally Posted by rocsec1
I had the problem when I sold my last house. Turned out the bath fans weren’t vented properly.
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That is quite commonly the reason..
The vent tube isn't taken to the eve vent or other suitable spot so all the bathroom humid air is just dumped into the attic in that local area..
Typically it would be quite easy to see whats causing the problem if one just looks up there..