WaterWay Rainscreen & Ventilation mats offer advanced technology for protection and performance. Our unique filter-fabric guards against moisture penetration like housewrap but offers a vapor permeability rating of 240-that’s five times higher than normal weather resistive barriers. This combination of extreme water resistance and maximum ventilation safeguards your walls against compromise. Create space between your building and the elements. For more information, visitwww.stucoflex.com.