It is based on moisture curing polyurethane, containing safety propellant, is used to seal gaps and crevices. The foam that dispenses from aerosol can is moisture cured and draws humidity from the air for cure. PU foam is widely used for filling joints between walls, ceilings, floors and gaps around pipes, windows and doorframes. Foam can be cut once fully cured, provides an excellent bond to lumber, plywood, concrete, metals, masonry and other substrates.
Note: For gun foam, an additional foam gun dispenser is needed to spray (Needs to buy separately). In such case, you might also need to buy foam cleaner to clean the gun adapter after use.