Are there any more rigid alternatives to fiberglass insulation for insulating rigid ductwork?
Fiberglass insulation by it’s nature needs to remain lofty to achieve it’s a R-value, but it tends to be easily compressible. I’ve never really been a fan of it and find I don’t particularly like having to deal with it when insulating rigid ductwork.
I’ve seen some alternatives used that look almost like aluminum foiled bubble wrap, but have been skeptical about their effectiveness.
Can anyone suggest a wrappable duct insulation that is less prone to compression than the fiberglass options?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part