A. Concrete Surfaces 

New Painting

• All surfaces must be clean, dry, free from dust, dirt, chalk, laitance, efflorescence, rust, grease, oil, and all other foreign materials.
• Allow new concrete to cure and dry completely for at least 28 days with a moisture content of less than 15% and a Ph level below 10.
• To neutralize and remove efflorescence, treat surfaces with Davies DV-100-X Concrete Neutralizer diluted with 16 parts water to 1 part DV-100-X. Apply by brush or mop to wet surface thoroughly and dry overnight. Rinse with water and dry.
• When applying Rendering Paste or Skimcoat for rough surfaces, concrete may be cured for only 7-14 days. Use MONDO SK-1 Skimcoat Superfine White Powder or MONDO SK-2 Rendering Paste. 

Repainting

• Remove mold and mildew growth with Davies DV-500-X Mildewcide Wash Solution. Rinse with water, dry and immediately apply the recommended paint system to prevent regrowth of mold and mildew.
• For surfaces that exhibit severe chalk, apply one coat of Davies  DV-5-530 Liquid Tile Penetrating Sealer.
• Repair uneven surfaces with Davies DV-5000 Concrete Putty or Davies DV-5-900 Liquid Tile Cast.