ceiling support box

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  1. B

    Cathedral Ceiling Support Box

    Does my support box need to reach all the way up to the underside of the sheathing? I think the one I bought will end up like the first image below But we need it to be like the second image, right? And the top gets trimmed off? Also thinking about what shape of hole I need to cut in the roof...
  2. H

    Ceiling support box without vented flashing??

    Hello, The store sold me one of the silicone roof flashings since I have a corrugated tin roof so it could be molded. However, they also sold me a 24” ceiling support box. The ceiling to roof clearance is shallow enough I could get the ceiling support box to pass all the way through the attic...
  3. K

    Stove pipe removal advice

    We recently removed an old gas fireplace that a previous owner had put in place of a wood stove. I’m interested in removing the plate in the ceiling and after doing research I believe there is some sort of support box attached to it. Thanks can’t seem to find anything that says it supports the...
  4. Twolfe278

    Supervent ceiling support box question?!

    I am planning on installing my chimney system tomorrow and have contemplated this gap for a few days. Is the small gap where the support band attaches to chimney then rests on the ceiling support box anything to worry about? Maybe I am worrying too much? Can I just silicone the small gap...
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