The #2200 Rubberized Aluminum Flashing Cement is a professional grade aluminum flashing compound with highly reflective qualities as well as having a superior elasticity. Forms a heavy expandable, brilliant silvery finish that prevents rust, inhibits fungus and reflects over 60% of the sun's damaging rays while reducing interior temperatures. High SBS rubber content provides flexibility giving advanced protection against moisture and corrosion. It may be used to repair modified asphalt sheets as well as conventional roofing.