DIAMOND PPGB3-310 Series PPG Diamond Interior Eggshell Paint + Primer GENERAL SURFACE PREPARATION Surface must be dry. Remove alt loose, pealing paint, dir, grease, and any other surface contaminants. Putty all nail holes and caulk all cracks and open seams. Sand al glossy, rough and patched surfaces. When applied fo an undercoated substrate, two coats ars required, with the first coat acting as the primer. Undercoated substrates, repaired surfaces or lightly stained areas may require additional coals.