Re: Roof Ventilation Issues?
Naomi -- There really shouldn't be any snow coming in through the roof vents --- providing they are proper vents.
Originally Posted by nmillan
Sounds to me your issue is because of the 2 vents on opposing sides of the roof. Because of pressure differential one vent is acting as an intake drawing in the snow --- this is more the case if soffit venting is lacking or insufficent to be the intake source.
In your case the roof vents should be on the same side and oppsite to the side of the prevailing winds.
Ridge venting combined with soffit vents--- eliminating the roof top vents altogether ---- would the ideal setup
As for roof venting removing moisture out the attic in the cold winter is really not correct. The temperature if at or below freezing will not remove much moisture. The main purpose of venting an attic during cold winter months is to keep the underside of the roof cold -- not allowing heat escape from the living space to melt snow on the roof causing ice damns.
The moisture issues you are describing could be from a number of causes -- roof leaking -- too much warm moist air from living sppace entering the attic space --- for examples.
If you are planning to redo the roof shortly then have the venting corrected then.
You should also seal any avenues of air leakage from the living space into the attic space.
"" an ounce of perception -- a pound of obscure "