Fiberglass insulation...does it dry out?

Old 03-02-07, 06:23 AM
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Fiberglass insulation...does it dry out?

I had several roofing nail hole sized leaks in 1 room of our house during the last rain. It happened during a roofing repair and is now all completed and waterproof. My question is-the attic insulation did get wet. I caught only about 2 cups of water in approx. 6 buckets. The ceiling drywall isn't damaged, I removed the insulation immediatly, placed it in a closed room with a dehumidifier and fan for 3 days. I'm not getting any water in the dehumidifier at this point so all looks to be dry. Is there any way to know if the insulation is truly dry and safe to put back in the attic or should I just replace it? I am finishing the attic space so purchasing a little insulation isn't going to kill me at this point.

Looking forward to your feedback.
Old 03-02-07, 05:22 PM
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Since it is not a big thing, you might as well replace it. That is the only way you will know for sure. You will also rest alot easier. Good Luck
Old 03-02-07, 05:35 PM
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Fiberglass insulation...does it dry out?

I agree with Jack-

Fiberglass does not really absorb water, but it does a great job of holding it. This is due to the surface area and fineness that is designed to create a "dead air space". This works against you unless you are sure you are getting air to flow through the insulation and not just circulate around it.


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