Originally Posted by jcrampton
is it ok for the sheetrock to touch the ductwork? any condensation concerns or expansion of the duct when running?
....From what I have found out, this is basically an 'urban myth'.
.... You see, unless you keep your basement at really cold temperatures....you shouldn't have to worry about condensation.
I've consulted about this very point before with my HVAC contractor (25 years in the biz and he is also a certified system design engineer)
It's a concern that alot people comment or ask about...
However, there has to be a difference in the temperature of more than 40 degrees + for condensation to occur.
So, unless you are cooling your home below 60 degrees and your basement temps are above 100.....
Or....your heating your home above 75 and your basement is below 35 degrees...
...You have nothing to worry about. However, to have peace of mind, you can use densarmor sheetrock around the ductwork.
Many of the big home improvement stores are now carrying it at a reasonable price....