Insulation, Radiant and Vapor Barriers - HAVC duct sealing

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DIYer2006
08-12-07, 09:34 AM
What should I use for sealing my home duct joints? Duct tape, like the famous Scotch's (3M) Duct tape, or Aluminum tape?

Thanks,
Alex


airman.1994
08-12-07, 10:15 AM
Duct seal or mastic as some call it. If it is not in an atick or crawl-space I would not waste my time or money. Their will be no savings

nap
08-12-07, 11:13 AM
what are your duct made of?

if fiberboard, then the aluminum tape,(which sould already be on there as it is needed to manufacture the duct)

if metal duct, I believe what airman was referring to (if I understood his intent) when speaking of mastic. There is a bruch on almost paste thick material that works very well. I see it used on commercial applications all the time. It not only sticks better than the tapes you mention but it also seals better and is easier to apply.

I would look to a pro supply house. can;t remember seeing it at the home imporvemnet stores.