CGC Sheetrock® Brand setting-type drywall compounds are chemically setting compounds for drywall interiors and exteriors that permit same-day joint finishing, and, usually, next-day decoration. Compounds are lightweight for easy handling and sand easily for fast, smooth finishing. They are ideal for heavy fills and are virtually unaffected by extreme humidity. They provide low shrinkage and superior bond, which makes them excellent for laminating gypsum panels to gypsum panels and to sound-deadening boards. In addition, they can be used for filling, smoothing and finishing interior concrete ceilings and above-grade concrete and for finishing joints in exterior gypsum ceiling boards.