Insulating a Bathroom


Old 02-04-07, 05:44 AM
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Join Date: Feb 2007
Posts: 3
Question Insulating a Bathroom

What's the best way to insulate a bathroom in the northeast US? Kraft faced fiberglass, unfaced fiberglass, or unfaced with poly overlayed??? Or even foam (over fiberglass batt?) I've seen all 4 recommended. I see that Certainteed has a vapor barrier that's breathable, but there are no vendors in my area. Any and all suggestions greatly appreciated! Thanks.
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Old 02-05-07, 06:42 AM
Join Date: Nov 2001
Location: USA
Posts: 1,873
I would recommend installing insulation with a vapor barrier on any walls, ceiling and/or floor that is in direct contact with an unconditioned space. Most wall/ceiling/floor coverings for bathrooms usually qualify as vapor barriers. This is because of the high humidity usually associated with bathrooms. To control the amount of moisture in bathrooms, I strongly recommend an exhaust fan that terminates to the exterior of the structure.

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