This course focuses on gypsum products manufactured with fiberglass facing which replaces the paper facing typically used on gypsum board. These products are regarded as “high performance” due to their superior weather resistance, superior fire resistance, and superior mold resistance. Five common product types include panels manufactured for 1.) exterior wall sheathing, 2.) shaftliner for cavity walls and area separation walls 3.) potential interior high-moisture conditions, 4.) tile backer boards for wet areas, and 5.) roof coverboards for low slope roof applications. The presentation outlines the high-performance characteristics of fiberglass faced gypsum products. The basic applications, attributes, advantages, and limitations of each of the five common product types are described. By understanding the performance and features of these fiberglass faced gypsum products, the specifications and drawing details can be properly prepared for successful use in buildings.