|
Re: Metal ducts
"1 - can the insulation jacket on metal air ducts be replaced/repaired?"
Not effectively.
Besides, see that no-longer-round-duct? That's a sure sign the seam has opened up. That metal duct most likely needs replacing anyway, probably has condensation on the outside of the metal duct and likely rusted (or at least rusting) out.
"2- Is it even cost effective to do so, would it be better to recommend replacing?"
Better to recommend replacing.
Of course, that now means duct with a higher R value for its insulation, which may mean going to flexible duct.
I saw the neatest flexible duct yesterday at my continuing education seminar - much stronger than the normal flexible duct, could not squish it down to oval, it stayed round. Could not squish it collapsed when making a sharp 90 degree bend - because you could not make a 90 degree bend that sharp, it would not collapse into itself.
Did not sag as much either between supports (because the helical coil around the duct was much stronger).
Of course, it cost about twice as much. It would save on installation time, so the overall job cost would not be much higher, if any ... but we all know that contractor go for the cheapest material available.
|
