Furnce vent/exaust through attic vapor barrier

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  #1  
Old 07-09-08, 06:29 PM
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Furnce vent/exaust through attic vapor barrier

I'm installing a furnace (high efficiency) and two 2" pipes must enter my attic. This means a hole in the vapor barrier.

What should I use to seal around the pipe? The pipe is rated to 65C / 150F, but would likely be much lower for day to day operation. Would some good old spray foam do the trick?

Thanks
John
 
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  #2  
Old 07-10-08, 07:20 PM
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I no of nothing that will replace the hole in the VB,but Id do the spay foam as well.
 
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