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GUARANTEE PROGRAM TPO SYSTEM GUARANTEE REQUIREMENTS EVERGUARD®TPO ROOFING SYSTEMS-MECHANICALLY ATTACHED 15-,20-,25-,AND 30-YEAR DIAMOND PLEDGE®NDL ROOF GUARANTEE REQUIREMENTS The following is a summary of the requirements for the installation of an EverGuard®TPO adhered roofing system in order to be eligible to receive an NDL roof guarantee.The selection of membrane type,thickness,and attachment is the responsibility of the architect,engineer,owner,or roof consultant.GAF EverGuard° roof membranes must be used in roofing systems to be guaranteed by GAF. TPO Guarantee Chart Maximum Guarantee EverGuard Extreme®TPO EverGuard®TPO Attachment Method L Insulation Requirements Length Membrane Membrane 15 years 50-80 mils 45-80 mils As required by Insulation Attachment Table(s) Mechanically 20 Years 50-80 mils 60-80 mils As required by Insulation Attachment Table(s) Attached 25 Years 60-80 mils 80 mils Minimum of 2 layers of approved insulation' 30 Years Minimum of 2 layers of approved insulation';top 70-80 mils n/a layer must be an approved cover board' '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. 'Approved Cover Boards: 1.EnergyGuard—HD Polyiso 5•SECUROCK®Roof Board 2.EnergyGuard-HD Plus Polyiso 6.DensDeck®Prime Roof Board 3.EnergyGuard-NH HD Polyiso 7.DensDeck®Roof Board 4.EnergyGuard—NH HD Plus Polyiso 8.Blue Ridge STRUCTODEK®High Density Fiberboard Additional Requirements For Extended-Length (25-,30-and 35-Years)EverGuard®Diamond Pledge"NDL Roof Guarantees 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 guarantees. Construction Type ended-length guarantees are available only for new construction or a complete tear-off to the deck.Extended-length guarantees are not eligible for re-cover applications. 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, Air/Vapor Retarders including opening due to storm damage. All 10'(3 m)wide or greater membranes with side laps mechanical attachment that exceed 6"(152 mm)o.c WellRoof'M Guarantee Any issued guarantee up to 30 years in length is eligible for a GAF WellRoof-extension;maximum guarantee length,including Extension WellRoof-Guarantee Extension,is 35 years. Roof Flashings For extended-length guarantees,separate counter flashing or cap flashing is required;exposed termination bars are not acceptable. For extended-length guarantees,regardless of the membrane type,EverGuard Extreme®pre-formed flashing accessories are required. Flashing Accessories When EverGuard Extreme®pre-formed flashing accessories are not available,unreinforced EverGuard Extreme®membrane must be used. Roof Edges EverGuard Extreme®Cover Tape HW,EverGuard Extreme®TPO Coated Metal in conjunction with EverGuard Extreme®Flashing Strip or any of the other EverGuard pre-fabricated extruded aluminum fascia systems are required. 7