Join Date: Jan 2011
Location: Saint Charles, IL
The spiral pipe also is air tight, whereas the snaploc ductwork is not. The spiral is also a heavier wall as well. If your entire system was run with the snaploc type, you would notice a considerable difference to the spiral. That being said, if it is only to one or two machines, and they are short runs, with blast gates at the main, it should work ok for you. If you do use the snaploc type, make sure to tape/seal the long "snaploc" seam, as well as the joint.
If you do cut a branch into the spiral, make sure to leave the overlapped spiral part in, as that is intergral to the stability of the pipe. The metal between the sprials can be removed, but the actual spiral should be left in.
I used to be fairly indecisive, but now....... I'm not so sure.
Last edited by thegrgyle; 01-08-2013 at 08:24 PM.
Reason: advise about cutting a branch in the sprial pipe.