Subsequently expand to fill gaps and cracks that hamper the efficiency of your home’s heating and cooling methods and spray foam insulation is designed to stick wherever it is implemented. These attributes make spray foam perfect for attics and crawlspaces filled with duct work.
A Sticky Situation
Foam insulation will stick to anything, including duct work, as long as the surface is clean and dry. It is impossible to eliminate When the spray foam has adhered. Because the duct work is coated with a thick coating of dust which interferes with the 35, in cases where it won’t adhere to duct work sheet metal, it may be. It may also be due to oils used in the process which have to be eliminated from the work. Wipe the duct work down white vinegar and 1 part water if the spray foam won’t stick. Let it dry thoroughly before spraying on the foam. Before employing spray foam, then check to find out whether it’s necessary to apply an ignition barrier between the work and the foam, particularly around joints.