Dense Packing Slopes with 11.25 " rafters. Bad idea?
I did a lot of research when I built. Bottom line is that I chose the cheaper easier method and now I'm paying for it. I continue to hear that it's OK to dense pack cellulose in a slope and not vent it or not flash it with closed cell foam. This is incorrect and I can prove it now! Moisture has collected on the back side of the roof sheeting and ice chunks have formed, mostly on the north side of the house. Any where there's snow build up on the south side I have ice formation on the inside of the roof sheathing as well.
I just found this and my question is, "What do I do"? The issue is, that this is a hybrid timber frame home. So in one half of the house I can remove all insulation, dry everything out, then flash & batt (or densepack cellulose again). I believe "Building Science" approves that method and it make sense to me. Although how do I deal with the timberframe? There's 12" framing on top of a finished T&G pine ceiling with 3 dormers. The only thing I can conceive happening is foam injection from the roof side and replacing some shingles. I welcome any and all comments... Except that densepacking slopes in direct contact with roof sheathing works, because it doesn't over the long run.
Posted Tue, 03/04/2014 - 16:41
Edited Tue, 03/04/2014 - 17:00
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