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Old 01-01-2020, 09:45 AM   #1
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Sealing Around Fan Vent Pipe


As the pictures show, I need to seal around this kitchen fan vent pipe. Insulation has fallen five feet down the opening which I will need to vacuum out.


Plan is to place drywall within 1/2" of the pipe to cover the opening, then spray foam (orange fire) the gap. Is this allowed?
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Old 01-01-2020, 11:02 AM   #2
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Re: Sealing Around Fan Vent Pipe


Yes, the pipe produces no heat like a chimney would. Sealing all around this protrusion is mandatory to keep fire at bay in the lower room, and to help with insulation.
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