VaporWise Vapor-Variable Interior Membrane from Benjamin Obdyke

Benjamin Obdyke’s VaporWise is intended to provide advanced moisture management. With a perm rating ranging from 0.14 to 14, VaporWise is designed to adapt to seasonal changes, according to the company. In winter, it acts as a Class II vapor retarder, helping to prevent interior moisture from entering the wall cavity, and in the summer, the membrane’s permeability increases, allowing moisture to escape.