SlopeShield Plus Self-Adhered (SA) vapor permeable roofing underlayment is designed for use on steep slope roofs of 2:12 or greater pitch. The revolutionary roofing underlayment features the patent-pending Vapor Permeable Polymer Composite Technology (VPPCT TM) exclusively from VaproShield. ADVANCED PATENT-PENDING TECHNOLOGY SlopeShield Plus SA is engineered with Vapor Permeable Polymer Composite Technology (VPPCT TM), anRead more