CGC Sheetrock® All Purpose Drywall Compound Coverage: Approx. 238 sq. ft. per box (10 gal. per 1000 sq. ft.). Application: All stages of drywall finishing and for repairing cracks in drywall or plaster. CGC Sheetrock® All Purpose Drywall Compound is ready-mixed, hard drying mud requires minimal mixing and/or thinning. It can be applied via hand or machine tool and has a smooth cream-like texture giving it excellent slip and smooth finish coat. Data Sheet