Leaking ceiling when weather shifts from cold to warm
I have a small addition attached to my house, 10 x 15, with the ceiling height to the ridge of 12 ft.
It is approx. a 6 pitch with a Cobra raised ridge vent. It has ice and water and 30-lb. felt with 50 yr Owens Corning architectural shingles that were installed 3 yrs ago.
The roof seems to be alright and I believe the problem is inside (moisture leak due to humidity).
No leaks through hurricane Sandy or rainstorms throughout the summer. Only leaks when it goes from extreme cold to mid 40s and low 50s.
The interior of the room is knotty pine slats 1x6 and they follow the pitch of the roof. there seems to be a 7 inch gap with poor insulation behind the pine board and the roof deck.
Sorry so long -- but here's the question: How would I attack this dripping issue? Its already vented and i can't take down the pine ceiling. If i have to take the small portion of the roof off then so be it - but what product would i use and do I insulate and close it or leave it vented?
Also, is there an underlayment to go over the roof deck (besides 30-lb felt) that will stop the plywood from frosting on the inside? Assuming felt and shingles to go back over top of it.
Posted Thu, 01/31/2013 - 08:46
Edited Thu, 01/31/2013 - 09:39
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