The product is designed for use as a waterproofing membrane and is reinforced with a polyester mat, which is coated with a polymer-modified asphalt, The product is a granule-surfaced roofing membrane designed to be used with Liberty SBS Self-Adhering Base/Ply or Liberty MA Mechanically Attached Base Sheet to provide long-lasting protection for the low-slope areas of your property, Liberty Systems are applied with out torches, open flames, hot asphalt, or messy solvent-based adhesives and are suitable for primed plywood decks and many other substrates, Liberty SBS Self-Adhering Cap Sheet is applied to approved substrates using its unique self-adhering formulation, Liberty Systems guarantees are available for up to 20 years, Coverage: 1 roll covers 1 square (100 squareft.)