A flat latex basecoat paint formulated to provide a superior first (prime) coat over interior gypsum board and concrete surfaces. Equalizes differences between the porosity and texture variations of gypsum board face paper and finished joint compound to minimize decorating problems such as “joint banding.” Applies with brush, roller, or spray equipment. Dries to a white finish in less than 30 minutes; topcoat within an hour. Not intended as a final coating— should be overpainted when dry. Available in 18.9 L (5 gal.) pails. Covers approximately 27.9 to 46.5 m2 (300 to 500 sq. ft.) per gallon.