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Old 05-21-2006, 02:09 PM   #1
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drain and vent insulation


After removing the kitchen sink and the wall, I notice the builders packed some plaster around the drain and vent pipes where they pass through the framing.
I assume that this is method of fire blocking. So, as I have knocked away a lot of it, would some type of spray foam be advised to fill in the spaces? Thanks

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Old 05-21-2006, 06:27 PM   #2
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drain and vent insulation


They make fire rated caulking just for this purpose. Unless the spray foam is fire rated then it would not meet code.

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