Cellulose insulation & vapor barriers?
Several insulation contractors have recommended loose fill cellulose attic insulation for my 1970's era ranch in northeastern CT. The house is heated with oil via a hydronic baseboard system. Central AC was installed 12 years ago, with equip. located in the attic. There have been no problems with the AC to date. Here is my question:
Would it be a good idea to install some sort of semi-permeable vapor barrier on the attic floor before adding the cellulose? I ask this because I know that cellulose can retain water. FYI, there is only about R-5 insulation in the attic now. I think it is fiberglass. There have been no roof problems & no leaks to date, but there are 2 small gable vents plus a ridge vent. I'm concerned that wind-driven rain could get into the attic and dampen the cellulose. Is this an unfounded fear? By the way, I want to stay away from SPF, which is why I thought the cellulose might be a good choice. Many thanks in advance for your thoughts.
Posted Fri, 11/01/2013 - 12:32
Edited Fri, 11/01/2013 - 15:03
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