Surface Preparation
• New concrete surfaces must be at least 7 days old before application.
• The surface must be clean, dry, free from oil, contaminants, and loose particles. Prepare the surface by high-pressure water jetting or scrubbing. If mold is present, wash the surface with sodium hypochlorite (cleaning solution) before rinsing thoroughly with clean water.
• For loose surfaces or large cracks, cut or remove the defective area and repair with non-shrink repair mortar before applying PU ROOFKOTE.
Primer Application
• Add 20–30% clean water and mix well to use as a primer coat.
• Allow the primer coat to dry completely before applying the waterproof coating.
Waterproof Coating Application
• Stir the material in the container thoroughly before use.
• PU ROOFKOTE can be applied by spray, brush, or roller on the prepared surface. Do not apply more than 1 kg per 2 m², as this will result in a thin film and reduced waterproofing performance.
• For multiple coats, wait until the previous coat is completely dry (approximately 2 hours, depending on weather conditions) before re-coating. Apply each coat in a direction perpendicular to the previous one.
• For the final coat, 5–10% clean water may be added to achieve a smoother finish.