RCM Water Based Plaster Primer

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.

What's In the box:

1 x RCM Water Based Plaster Primer