We have an attic with about 12 inches of blown-in fiberglass. The area is about 815 sq ft. I plan on having the attic air sealed and more insulation added. One contractor wants to add about 12" of blown-in fiberglass and the other one is recommending about 12" of blown-in cellulose. I believe the cellulose is the best option but worried about weight on the ceiling and the reduction in R value of the fiberglass once it is compressed by the cellulose. How much R value to you think I will lose in the fiberglass?
Should soffit dams be rolled up fiberglass or something like an AccuVent and the perimeter sealed with foam? I have proper vents but without any dams they are now useless.
Is spray foam applied to the rim joist in the basement area a health danger. I've been told that I will need to be out of the house during and for 24 hrs after the application?
Our home is located in southern NH.
Posted Tue, 02/18/2014 - 17:09
Other Questions in General questions