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Re: wet insulation
Fiberglass insulation can often be dried with little or no real permanent loss of R value. Cellulose insulation though tends to pack down and clump together after wetting and potentially reduces its R value more significantly and permanently once dried. It also possible that some of the borates added to the cellulose may be washed out by wetting and that can potentially change its intended anti-fungal properties.
Even fiberglass insulations though can stay wet long enough to create a mold problem on, or within, the insulation (when dirty) or on the surfaces they cover (particularly the paper backing of drywall). Drying contractors will often remove wet fiberglass insulation anyway in order to get to and dry other building materials covered by the insulation.
Once removed, its often not practical to try and put the old insulation back even if its been dried out. Its usually just cheaper to replace it with new once everything else has been dried and cleaned sufficiently.
Last edited by Phillip Stojanik : 06-24-2007 at 08:37 PM.
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