RCM Water-Based Plaster Primer – Reliable Adhesion & Breathable Protection for Interior and Exterior Walls RCM Water-Based Plaster Primer is expertly formulated to deliver excellent adhesion, breathability and a durable base coat for a wide range of topcoats. Ideal for use on properly prepared cement bricks, fibre cement, and plaster surfaces. This low-VOC primer helps extend the life and finish of your topcoat while ensuring a consistent, professional result. Whether you're refreshing old enamel painted walls or treating new plaster, this primer is a trusted solution for superior surface preparation. Key Features: ✅ Excellent Adhesion: Forms a strong bond with cement-based substrates ✅ Breathable Formula: Allows moisture vapor to escape, helping to prevent peeling ✅ Low VOC: Environmentally conscious, safer for indoor use ✅ Versatile Application: Suitable for RCM Paint Brush, roller, or airless spray ✅ Not Classified as Hazardous: Safe when used as directed ✅ Made in South Africa: Locally produced with quality and reliability in mind Surface Preparation: Surfaces must be dry, clean, and free of dust, grease and oil. For fibre cement/cement bricks/plaster(excluding Rhinolite) - degrease, wire brush efflorescence and lime wash, then rinse and dry. For previously painted glossy surfaces, clean with sugar soap, fill defects, and sand to a matte finish. Application Guidelines: Stir thoroughly for ±5 minutes before application. Use a good quality brush or roller. For spray use, thin 5 parts primer to 1 part water. Avoid overspreading and ensure even coverage. Wait at least 1 hour before overcoating (longer in cooler climates). Final overcoating should occur within 4–6 weeks. Clean Up: Clean all tools with warm, soapy water. Storage and Safety: Store in a cool, well-ventilated place. Keep sealed and upright during transport. Keep out of reach of children. Use in well-ventilated areas and avoid contact with eyes and skin. Dispose of contents in accordance with local regulations. Technical Data Sheet What's In the box: 1 x RCM Water Based Plaster Primer