Moisture in Attic

Post Reply | Watch this Post

Moderator Post (s) for this thread: > Vapor retarder. by Billhart on 01/29/2008 > Kitchen Soffits by Billhart on 01/30/2008

thanks for responding Bill. Upon further examination, the moisture is primarily on the northside of the roof. Snow was still on that side outside on the roof until Sunday.

I understand about plugging openings including the need to vent my bath and laundry room fans to the outside. I have question on that as well.

But before we go there you mentioned "sealing off soffits in bathrooms and kitchens" I do not know what you mean by this. My soffits have the openings and the plastic chutes that allow air to pass from soffit to attic. Every third truss has one of these chutes. I intend to add more to the northside soffitt to increase airflow on that side of the house. Could you clarify your meaning. There is nothing different about my bath/kitchen ceilings, insulation or soffits compared to my other rooms.



Now the bathroom fans, I'm reading where these should be vented outside through a roof or sidewall but not left in the attic or in the soffit. I have 3 vent fans on my first floor, is it possible to connect them to a common vent pipe and only have one hole in my roof? I think I might need some sort of "check valve" in each line to prevent backflow into the others that are not in use.

Are you famililar with the in-line fans that are mounted in attic and run lines to the bathroom, I wonder if you could hook that up to multiple rooms. I don't want 3 holes in my sidewall or roof.

Thanks