Delta-Vent SA by Cosella-Dörken

This self-adhesive, water-resistive air barrier from Cosella-Dörken combines a high-strength adhesive with high vapor permeability, reducing the odds of water and air leakages due to membrane penetration. Instead of metal fasteners, a 2-inch “Plus” edge strip on the top edge of the front side is locked with the bottom side of the next row to create a secure, tightly sealed lap.