Chemically-setting powder 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 humidity. They provide low shrinkage and superior bond, which makes them excellent for laminating gypsum panels to gypsum panels, to sound-deadening boards, and to above-grade concrete surfaces. In addition, they can be used for filling, smoothing and finishing interior concrete ceilings and above-grade concrete; for taping and finishing SHEETROCK Brand Water-Resistant Gypsum Panels under tile in bathroom wall areas; for taping and finishing SHEETROCK Brand HUMITEK Gypsum Panels and for finishing joints in exterior gypsum ceiling boards.