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GAF has added two modified bitumen membranes to its Ruberoid family of roofing products. EnergyCap MOP FR is a fire-retardant membrane with an elastomeric coating; a polyester mat core offers split and tear resistance. MOP Plus Smooth features a nonwoven polyester mat coated with SBS polymer-modified asphalt. Designed for built-up roofing membrane repairs, MOP Plus Smooth can also be used for flashing construction. • gaf.com