Covering Old Hold in Duct Board (w Pics)

Old 08-23-05, 06:13 AM
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Join Date: Aug 2004
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Covering Old Hold in Duct Board (w Pics)

I need to relocate a duct "branch" from the side of a main supply trunk (see before pic) to the end cap of a supply trunk (see after pic) to get it out of the way when I finish my basement.

The main supply trunk is made of duct board. The duct branch is sheet metal.

How do I cover the old hole? Do I simply cut up a piece of ductboard to seal it? then foil tape it?

Also, if I relocate it this way, does the air flow change? Bad, Good, Better? Is this even legal?
Old 08-23-05, 08:31 PM
Join Date: Aug 2005
Location: nc
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you can patch it the way your talking not much eles to do . as far as moveing the 90 if you put it on end you will get more air flow if you got any other grills before the 90 they may loss air . see by comeing off the side you make some air bounce back in duct . by comeing off end it go right throw

i hope this helps

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