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above the cant strip. Cut out scupper opening as necessary. Field mem- brane is fully adhered and edges sealed. Over this, install a cap of fully adhered Flintlastic APP modified bitumen membrane that covers the top of the parapet and extends down the parapet wall and a minimum of 4" onto the field of the roof. Secure membrane 9" o.c. through tin discs along top of parapet. Again, cut out scupper opening and seal membrane edges. Install parapet wall metal coping.

Basic Application: Flintlastic SBS Modified Bitumen

Prepare the substrate as described on page 10. Flintlastic SBS modified bitumen can be applied in either hot asphalt, cold SBS modified bitumen adhesive or using a professional roofer’s torch. Do not use hot asphalt or cold adhesive for applying polyethylene backed Flintlastic SBS modified bitumen (use torch application method).

Hot Asphalt Application Roofing asphalt shall conform to ASTM D-312 Type III (slopes up to 1"/ft.) or Type IV (slopes up to 3"/ft.) Asphalt must not be heated to or above the actual flash point. Asphalt should not be heated and held above the finished blowing temperature for more than 4 hours.

All moppings shall be uniform and free from voids. Bitumen temperature shall be at the Equiviscous Temperature (EVT) ±25°F, at the point of application (minimum 425°F). EVT is defined as the temperature at which asphalt attains the proper viscosity for application (this information is typically found on the product labeling).

“Hot mop” application of Flintlastic GMS Modified Bitumen Cap Sheet Adequate heat at the point of application is critical to proper adhesion of the membrane plies. Apply asphalt uniformly and evenly without voids; a small bead of asphalt should be visible at all lap areas. Solid moppings require a min. of 25 lbs./100 ft2 hot asphalt application. Spot mopping of base sheet, when appropriate, is generally accomplished using a minimum of 12" diameter circles spaced every 24" o.c. in three staggered rows. (Certain Factory Mutual listed specifications may have different requirements; refer to www.roofnav.com for complete details).


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