EWI Pro Top Coat Primer 7 Kg (EWI-333)

The EWI Pro Top Coat Primer is a high performance primer designed to be used with our full range of silicone renders. It provides superior adhesion, enhances durability, and ensures a flawless render finish every time.

Why use EWI Pro Top Coat Primer?

• Stronger Adhesion
• Controlled Absorption
• Colour Matched Tinting 
• Breathable and Durable
• All Season Performance

Application Instructions

1. Surface Prep: Ensure substrates are stable, dry, and free from dust, grease, algae, moss, or loose material.
2. Mix Well: Stir thoroughly before use. Do not dilute with water or additives.
3. Apply Evenly: Use a roller to apply a uniform coat on top of the reinforcement basecoat (EWI-220 or EWI-225).
4. Drying Time: Allow approximately 4 hours to dry. Apply silicone render 24 hours after priming. 
5. Conditions: Only apply between +5°C and +25°C. Avoid rain, snow, strong winds, or direct sunlight during application.

Technical Details

• Coverage: 0.2-0.3kg/m² depending on substrate absorbency
• Drying Time: ~4 hours
• Shelf Life: 12 months (stored dry at +5°C to +25°C in original packaging)

The EWI Pro Top Coat Primer is an essential step for achieving a long lasting, professional render finish. Whether you're applying Nano Drex Silicone Render, Premium Bio Silicone Render, Silicone Render, or Silicone Silicate Render, this primer ensures maximum performance and a flawless look.

Frequently Asked Questions

1. What is Top Coat Primer used for?

Top Coat Primer is designed to be used in conjunction with our silicone renders. Top Coat Primer aids adhesion between the render and the basecoat. Also, it limits the absorption of the basecoat layer, ensuring the render cures properly and giving the installer time to finish the render.

2. What colours can I tint my Topcoat Primer to?

The standard colour of Top Coat Primer is white; however, it can be tinted in the same colour as the render being used, ensuring that there is no basecoat bleed-through. 

3. How do I apply Top Coat Primer?

To apply Top Coat Primer, use a large paintbrush or roller to paint it on the substrate. Allow the primer to dry fully before applying silicone render.

4. How long does it take for Top Coat Primer to dry?

Top Coat Primer takes approximately 4 hours to dry. Ensure the top coat primer is completely dry before applying silicone render.

5. Can I use Top Coat Primer all year round?

Top Coat Primer can be used all year round, but it is extremely important to use during the hot periods as it ensures that the render cures properly. This gives the applicator more time to achieve the required finish on the render. It is also effective in cooler periods as the primer aids adhesion between the basecoat and renders.