Fastening wedi Building Panels to Framing The wedi® Fastener Kit includes 100 coarse-thread screws and 100 tabbed steel washers for securing wedi® Building Panels to wood studs and 20-gauge metal framing. wedi recommends approximately one screw and washer per square foot of Building Panel. Coarse-Thread Screws for Wood and Metal Framing The 1-5/8" Phillips-head screws feature a premium ceramic coating that is ACQ compliant. They are designed for fastening wedi Building Panels to compatible wood and metal framework. Tabbed Steel Washers for Secure Panel Placement The steel washers feature four tabs for fast, secure placement during installation. They provide a solid gauge according to ISO standards with reduced potential for deformation, and their load capabilities are independently tested.