20 oz. SoudaFoam Gap Fill is a one-component, self expanding, ready to use polyurethane foam with propellants, which are completely harmless to the ozone layer. SoudaFoam Gap Fill is available for use with a standard straw applicator, a foam applicator gun, and our patented Genius Gun Applicator. Characteristics: Permanent color, Paintable, Mildew resistant, Very good adhesion on many materials, Very easy application, Low Expansion (Gun Foam). Applications: Filling of cavities, Sealing of openings in roof construction, Creation of a soundproof screen, Connecting of insulating materials and roof construction, Application of a soundproofing layer on motors, Improving thermal isolation in cooling systems, Installation of air conditioners Shelf life: n18 months in unopened packaging in a cool and dry storage place at temperatures between 41°F and 77°F, Always store can with the valve pointed upward. Application Instructions.