EZ Seal Combo Primer is a high performance, rapid-curing primer used to promote bonding of concrete, masonry, wood, asphalt cap sheet membranes, or other recommended substrates with EZ Seal liquid-applied roofing membranes. Malarkey Roofing Products® EZ Seal System is waterproof, flexible, self-adhering, and ideal for access-restricted and difficult waterproofing conditions. EZ Seal conforms and bonds directly to the substrate, eliminates the need for caulk and pitch pans, and is virtually maintenance free.