supermanotorious
Well-known member
I'm getting the chimney installed and riding the struggle bus. Well really the challenge is framing the support box.
I have a "roof supported" installation. The chimney is passing through the roof where an old patio was enclosed. My joists are 24" on center and I need to make a 14"x14" framed opening. Where the patio was enclosed it was finished. So in a cross cut view we have the sheetrock ceiling, the joists and insulation, then the OSB, tar paper, shingles. There is no attic/crawl/access space at all.
How much of the sheetrock do I need to cut away to attach my framing members to the joists? Do I need to cut the entire 24" span between joists? Do I need to cut beyond that, to get to the back side of both joists to nail the framing members in place?
I have a "roof supported" installation. The chimney is passing through the roof where an old patio was enclosed. My joists are 24" on center and I need to make a 14"x14" framed opening. Where the patio was enclosed it was finished. So in a cross cut view we have the sheetrock ceiling, the joists and insulation, then the OSB, tar paper, shingles. There is no attic/crawl/access space at all.
How much of the sheetrock do I need to cut away to attach my framing members to the joists? Do I need to cut the entire 24" span between joists? Do I need to cut beyond that, to get to the back side of both joists to nail the framing members in place?