From: GCP Applied Technologies
GCP Vycor PRO flashing seals around fasteners, forms water-tight laps and is easily worked into tight details due to its pliable membrane. The self-adhered flashing provides protection against water infiltration in nonroof detail areas. It is composed of a durable, tear- and puncture-resistant engineered polypropylene backing film paired with a nonasphaltic, butyl-modified adhesive. Offered in 75-ft. rolls, the flashing has wide application and service temperature windows—primerless adhesion to wood sheathing from 25 F and suitable for in-service conditions up to 176 F, respectively—as well as long exposure time.