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Re: Chimney flue firestopping
Jeff,
Adding to the post above, but making a separate post for it:
In those areas you are asking about in your photos, how are they going to insulate those areas if not by putting gypsum board, or something similar, over the openings?
Not only would you be addressing draftstopping with the gypsum board over the top of those open vertical chases, but you would then be allowing for proper insulation.
Thus, the argument could be turned from draftstopping to energy efficiency code requirements for attic insulation.
Solves two problems with one solution.
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