30 Jul '13, 8pm

Green Building Q&A: Problems with Roofing and Ventilating House

My insurance company has agreed to replace the roof, including the decking (sheathing), and ventilation, in my cape cod home in Dayton, Ohio. I have a refinished, vaulted second floor, with a small attic peak. All of this was there when I bought the home 3 years ago (I think it was done in 1998). Thinking this would be a chance to improve the insulation I began to investigate what to do. Now I am completely baffled, both online sources and contractors have given me such divergent advise. This is what I know of my houses structure. I have asphalt shingles I have no soffit vents. I have turtle vents and gable vents. Rafters are 2 by 6. I have R 19 BATs crammed in the rafter along with styrophome baffles (approximately 2 inches in depth). Thus the BATs are compressed to roughly 3.5 in. This material runs from the knee wall top to the small attic floor and peak area (3ft or so...

Full article: http://www.greenbuildingadvisor.com/community/forum/gener...

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