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Loose Fill - Blown
Blown-in
loose fill is one of the easiest forms of insulation to install. Commonly made
of cellulose, glass fiber, mineral wool, perlite, or vermiculite, it can be blown
into areas needing insulation. Equipment for blowing insulation into walls or
attics can be rented, or contractors with their own equipment can be hired to
do the job.
To ensure getting the maximum R-value from the insulating material, watch the density setting used. Properly blown loose fill generally has a higher insulating value per inch than poured loose fill because of the loft added by blowing. As with all insulation types, air barriers are often needed, especially on attic knee-walls.
A new and increasingly popular form of this insulation involves blowing glass or wool fibers mixed with an adhesive into building cavities. The resulting installation cures in a few days, is resistant to settling, and provides effective sealing of the cavities.
