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Registered
Join Date: Jun 2007
Location: Lake Oswego, OR
Posts: 6,305
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I believe #1 is air gap sealing - getting your home airtight. Air duct sealing IF you have ductwork under the home or in the attic that is not insulated is supposed to be a good thing. I hear abou slapping a mastic on from outside the ductwork. Blowing something in? That might restrict your flow. Check with an ACCA member in your neighborhood. Those are the folks who have training and know this stuff. I am on a local BOD of ACCA.
Larry
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