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Old 11-15-2014, 03:55 PM   #1
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Insulation around bathroom heater


My attic right now has two layers of thin rolled insulation. I want to blow some cellulose on top of that but I am unsure what to do around the bathroom heater. Right now it's just exposed to the attic. Should I just build walls around it and leave the top exposed or can I build a box out of xps or drywall and then put some insulation on top of it?
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Old 11-15-2014, 04:41 PM   #2
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Build a box out of fireproof drywall.

XPS is not suitable here.

Box should ideally be sealed up and airtight unless it is drawing its air from the attic which is unlikely.
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Old 11-15-2014, 05:25 PM   #3
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Fireproof drywall? Is that just half inch? I didn't know they made fireproof drywall. I always thought it was a fire barrier rated for like 30 minutes
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Old 11-15-2014, 05:29 PM   #4
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Fire rock is 5/8 not 1/2.
Build the box out of plywood and just line it with sheetrock.
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