A moisture meter will let your contractor know if there’s moisture in the stucco before starting. The wetter the material, the less ready it is to be sanded, painted, finished or covered. Your contractor will use a premixed stucco repair patch material to fill any small holes and will paint on dry days to avoid sealing in water. Painting rough stucco requires more paint. Brush painting stucco costs $112 per 100 sq. ft., roll painting costs $55 per 100 sq. ft., and spray painting stucco costs $25 per 100 sq. ft.