Plascon TradePro Water-Based Plaster Primer 20L
Plascon TradePro Water-Based Plaster Primer is a professional-grade solution for masonry surfaces. Manufactured by Kansai Plascon, it offers excellent adhesion, quick drying, and a breathable finish that allows moisture to escape. With low VOC and low odour, it is eco-friendly and safe for interior and exterior use. Designed to seal porosity and provide a smooth matt base, it ensures reliable performance for cement plaster, concrete, porous brickwork, and fibre-cement boards. Available for personal dispatch in select regions, this primer is trusted by both professionals and DIY users.
Plascon TradePro Water-Based Plaster Primer Benefits and Features
- Smooth Matt Finish: Creates a uniform surface for topcoats
- Quick Drying: Touch dry in 30 minutes, recoatable in 1 hour
- Low VOC & Low Odour: Eco-friendly and safe for indoor use
- Excellent Adhesion: Strong bonding to masonry substrates
- Breathable: Allows moisture to escape, reducing blistering risk
- Non-Flammable: Safe handling and storage
- Professional & DIY Use: Reliable results for all projects
Steps to Follow For Applying Plascon TradePro Water-Based Plaster Primer
Preparation
- Ensure surfaces are dry, firm, and free of dust, grease, or oil.
- Remove contaminants with Plascon Aquasolv Degreaser and rinse thoroughly.
- Fill defects with Polycella Polyfilla and allow to dry.
- Avoid powdery surfaces as they prevent adhesion.
How to Apply the Plascon TradePro Water-Based Plaster Primer
- Stir thoroughly before use.
- Apply evenly with brush, roller, or airless spray.
- Avoid painting in inclement weather or below 10 °C.
Cleanup
- Clean tools with water immediately after use.
- Do not pour paint or wash water down the drain.
A Few Scenarios Where the Product Can Be Used
- Priming new cement plaster walls
- Sealing porous brickwork
- Preparing fibre-cement boards
- Interior and exterior masonry projects
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Health and Safety
Ensure good ventilation during application and drying. Avoid contact with skin and eyes; wash immediately if accidental contact occurs. Harmful if swallowed—seek medical attention without inducing vomiting. Store away from direct sunlight, heat, and severe cold. Keep out of reach of children. Please share your experience by leaving a review.
Shipping Info
Shipping & Delivery
We deliver to Klerksdorp, Orkney, Stilfontein, Carletonville, Fochville, Parys, Johannesburg, and Pretoria. Customers in other areas must contact the store for delivery options.
Delivery times are normally 5-7 working days, but it might be quicker depending on your location.
You will also be able to book your own courier at checkout.

FAQ
FAQs – Plascon TradePro Water-Based Plaster Primer
- What surfaces can I use this primer on?
Cement plaster, concrete, porous brickwork, fibre-cement boards, and building boards. - Is it suitable for gypsum surfaces?
No, it is not suitable for gypsum or Rhinolite. - How long does it take to dry?
Touch dry in 30 minutes, recoatable in 1 hour at 23 °C. - Is it eco-friendly?
Yes, it has low VOC (<1 g/L) and low odour. - Can I spray it?
Yes, it can be applied with airless spray without thinning. - Does it seal porous surfaces?
Yes, it evens out porosity and improves adhesion. - What finish does it provide?
A smooth matt finish that prepares surfaces for topcoats. - What sizes are available?
5L and 20L packaging options.







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