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Posted by Jay Stootzmann on September 4, 2006, 10:02 am
It should work. I've done it on my own duct work with no problems.
>I am sealing my ducts with mastic. However, there is one area that I can't
>reach between the duct and he subfloor. I can feel a cold air draft up
>there fom the AC. Since I can't reach it, would it make sense to spray
>some of that Dow "Great Stuff" foam up there and let it expand and seal it?
>
> My ducts are galvanized, circa 1965. Thanks.
>
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