Soudafoam fireblock is a one-component, self expanding, ready to use polyurethane foam with propellants, which are completely harmless to the ozone layer. soudafoam fireblock is available for use with a standard straw applicator. Characteristics: permanent color, paintable, mildew resistant, very good adhesion on many materials, very easy application. Applications: installing of window and door frames, filling of cavities, sealing of openings in roof construction, creation of a soundproof screen, mounting/sealing of window and door frames, connecting of insulating materials and roof construction, improving thermal isolation in cooling systems, installation of air conditioner. shelf life: 18 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 upwards. Instructions: straw: shake the aerosol can for at least 30 seconds.