MasterEmaco N 303 is a single component, acrylic polymer modified repair mortar for use as a “fairing coat” or cosmetic mortar. When mixed with water, as directed, a fine grey trowelable mortar results, which can readily be applied to fill in pores, blowholes and blemishes on a concrete surface. MasterEmaco N 303 can be used as a “skim” coat prior to the application of protective coatings.