Matrix 201 Premium SBS Flashing Cement is a premium, asbestos-free formulation for use as a cold-applied bonding agent in SBS modified asphalt roof systems. The high level of modifiers ensures high bonding strength. Heavy, "trowel-grade" consistency makes this product ideal for flashing details, attachment of membrane to steep slopes and parapet walls, and a variety of roofing and waterproofing repairs, especially at moving joints where its flexibility and elasticity make it superior to standard plastic cements.