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-   -   Completely plug a duct that is never used but can't be removed? (http://www.diychatroom.com/f17/completely-plug-duct-never-used-but-cant-removed-136115/)

skiposwald 03-05-2012 10:56 PM

Completely plug a duct that is never used but can't be removed?
 
There is much more to this story, but I'll make it simple.
I have a 4" duct that I can't remove, but I would like to completely plug it. Sticking a small towel in there has worked perfectly, but I worry about safety or insurance issues. Any recommendations for something I can stick in there to quickly and safely plug it? Or maybe some sort of expanding foam? I am open to anything but unfortunately it is a tight area to work in. I have googled like crazy, but all I get is info about that goop you put outside your ducts to seal them.

ben's plumbing 03-05-2012 10:58 PM

Quote:

Originally Posted by skiposwald (Post 871582)
There is much more to this story, but I'll make it simple.
I have a 4" duct that I can't remove, but I would like to completely plug it. Sticking a small towel in there has worked perfectly, but I worry about safety or insurance issues. Any recommendations for something I can stick in there to quickly and safely plug it? Or maybe some sort of expanding foam? I am open to anything but unfortunately it is a tight area to work in. I have googled like crazy, but all I get is info about that goop you put outside your ducts to seal them.

seal a 4" cap on the pipe... picture would help

skiposwald 03-05-2012 11:18 PM

Thanks, but seal it with what? Is there caulk for inside ducts? I won't be able to use any sorts of tools besides my hands.

Unfortunately, it is too cramped to get a picture that would make any sense to anyone.

how 03-05-2012 11:25 PM

If the 4' pipe is not connected to the chimney and the concern is only about safety or insurance then the towel is fine. Anyone in the trade however would use a 4" cap and screw, seal or tape to secure.

joecaption 03-05-2012 11:26 PM

One of these and some foil tape and your done.
http://images.search.yahoo.com/image...mb=cpCLpHoH11V

skiposwald 03-06-2012 07:25 AM

Thanks, I'll try the cap. Hopefully it will easily fit, since it will be hard to maneuver it at all.


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