EZ Seal Catalyst Powder is used to cure EZ Seal liquid resins and make them ready for application as roofing membranes. EZ Seal conforms and bonds directly to the substrate, eliminates the need for caulk and pitch pans, and is virtually maintenance-free. Malarkey Roofing Products EZ Seal System is waterproof, flexible, self-adhering, and ideal for access-restricted and difficult waterproofing conditions.