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Sealing Duct work

I saw on ATOL a guy doing an energy audit where he found leaks in the duct work and sealed it with mastic. Do you know where or who carries/sells mastic that I can us to seal my duct work with? I can't find the product in any store and the clerks think I'm nuts.

Re: Sealing Duct work

Big box stores in our area have "tape" that is used to seal ductwork. It is not duct tape. The type I have used is foil backed.

Re: Sealing Duct work

the problem is not everyone who works at the stores knows the proper names for certain products. just ask for duct sealent that you brush on.

Re: Sealing Duct work

Referred to by commercial, professional tin bangers across the nation as “Pooky”. :D ............. Really.

You might try a commercial duct supply place if you do not want to buy on-line.


Re: Sealing Duct work

Or you can silicone caulk as well.

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