WOB Brush-Grade Acrylic Flashing (Biocide-Free)
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Meets NSF Protocol 151 for rainwater catchment.
GAF WOB Brush-Grade Acrylic Flashing is a water-based, acrylic sealant that is applied to seams, fasteners, flashings, and penetrations prior to the application of an acrylic coating.
It is tested and certified by NSF International as complying with
requirements of NSF Protocol for Health Effects of Rainwater Catchment System Components