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GUARANTEE PROGRAM, <br /> PVC SYSTEM GUARANTEE REQUIREMENTS <br /> EVERGUARDO PVC ROOFING SYSTEMS—MECHANICALLY ATTACHED <br /> 15-,20-,AND 25-YEAR DIAMOND PLEDGED NDL ROOF GUARANTEE REQUIREMENTS <br /> The following is a summary of the requirements for the installation of an EverGuardO PVC roofing system in order to be eligible to receive an NDL roof guarantee. <br /> The selection of membrane type,thickness,and attachment is the responsibility of the architect,engineer,owner,or roof consultant.GAF EverGuardo roof <br /> membranes must be used in roofing systems to be guaranteed by GAF. <br /> PVC Guarantee Chart <br /> Attachment Maximum Guarantee EverGuardO PVC EverGuardO PVC KEE <br /> Method Length EverGuardO PVC Fleece-back EverGuardO PVC KEE Insulation Requirements <br /> Fleece-back <br /> 15 Years 50-80 mils 50-80 mils <br /> Mechanically 20 Years 60-80 mils 60-80 mils As required by Insulation Attachment Table(s) <br /> Attached <br /> 25 Years 80 mils 80 mils Minimum of 2 layers of approved insulation' <br /> 'May be one layer when using a minimum 1/4:12 tapered polyiso insulation system from GAF over concrete,gypsum or cementious wood fiber(cwf)decks. <br /> Additional Requirements For Extended-Length (25-Year) EverGuardO Diamond Pledge'NDL Roof Guarantees <br /> Building Height Limitations Buildings greater than 100'(30.5 m)in height must have a minimum 3'(1 m)parapet wall to be eligible for an extended-length <br /> guarantees. <br /> Construction Type Extended-length guarantees are available only for new construction or a complete tear-off to the deck.Extended-length guarantees <br /> are not eligible for re-cover applications. <br /> An air/vapor retarder is required where large wall openings greater than 10%of a total wall area can be open during a wind storm, <br /> Air/Vapor Retarders including opening due to storm damage. <br /> All 10' (3 m)wide or greater membranes with side laps mechanical attachment that exceed 6"(150 mm)o.c. <br /> WellRoof-Guarantee Any issued guarantee up to 25 years in length is eligible for a GAF WellRoof-extension;maximum guarantee length,including <br /> . Extension WellRoof-Guarantee Extension,is 30 years. <br /> Roof Flashings For extended-length guarantees,separate counter flashing or cap flashing is required;exposed termination bars are not acceptable. <br /> 8 <br />