15 Nov '11, 7am

Green Building Q&A: Hip Roof Cathedral Roof Insulation

I am in the process of re-modeling the 3rd story of a home in Oregon (zone 4 or 5). I opened the ceiling to create a cathedral ceiling. I have never insulated a cathedral roof so I have spent a few weeks reviewing all the post here and think I have the solution, but I would like some input if possible. First of all, there may be better solutions, such as spray foam, but budget constraints dictate the need for coming up with a workable and affordable solution. The rook wad framed with 2x8s so I added 2x4 cross braces (strapping) to add depth and to even out the ceiling, which was off by as much as 1/2 an inch from rafter to rafter. I decided to go with a vented roof versus a hot roof even though it will be difficult at best. There are soffit vents on the two long sides, but not on the short sides. I plan on adding a ridge vent later this year. I am thinking that the best wa...

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

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