Gold Bond® BRAND 3/4" Ultra-Shield FS® XP® Gypsum Board with Sporgard™* was developed as an improved moisture resistant board, offering the same advantages of a traditional moisture resistant board with added mold resistance in the core and paper. 3/4" Ultra-Shield FS XP Gypsum Board panels consist of a specially treated, fire-resistant, Type X gypsum core encased in a heavy mold/mildew/moisture resistant, 100% recycled, PURPLE® paper on the face side and a heavy, mold/mildew/moisture resistant,100% recycled gray paper on the back side.