Teifs WeatherTight VNT is our premium drainage EIF system. Like TeifsFlex EIFS, this system also offers the base level of benefits available in EIFS; energy efficiency, light weight, versatile design, and economical installation. Like Teifs Permadrain this system provides water-resistive barrier and means of drainage. This system is superior in that the water-resistive barrier is liquid applied which means less chance of rips and tears. This liquid applied water-resistive barrier also acts as an air barrier allowing for climate control systems to operate more efficiently. Means of drainage is achieved through vertical ribbons of adhesive providing a larger drainage plane for incidental moisture.