Sealing Ductwork With Expanding Foam
I’ve got some tricky duct work near the registers that I’d like to try to seal up from the basement/garage down below. I’m planning on just filling large gaps with expanding foam and trying to cover everything with mastic to make it all one surface similar to how I use the Proseco R-guard liquid flashing in my window openings. Is there any better or different way to do this?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part