•Moisture: There must not be any water residue on the surface of the substrate. Moisture must be
•Unstable matter: Remove loose bonding film, dirt, peeling paint, etc by high-pressure water jet wash or mechanical means such as power brush or scraper, whichever is suitable
•Contaminants: Remove dust and foreign matter by cleaning with damp cloth. Remove oil or grease using solvent or mild detergent. Allow surface to dry
•Fungus and Algae: Wash the affected area to remove unstable matters and micro-organisms. Apply Anti-Fungus Solution and leave on for at least 2 hours
•Hairline cracks: Fill cracks with suitable exterior grade water-resistant putty or filler