Ensure the surface is clean, dry, and free from dust, grease, or loose material before application. Remove poorly adhering paint using abrasive paper or a stiff brush. Apply one coat of Weathercoat Pure Seal evenly with a brush, roller, or spray. Allow 2–3 hours of drying time before applying Berger Exterior Putty or a suitable topcoat. For best results, use under Berger Weathercoat emulsions to maximize protection and durability.