This special primer modifies surfaces to help retain water and prevent adhesion failures when plastering onto very dry or high suction backgrounds.

Thistle GypPrime makes your job easier, giving you extra working time by reducing the suction base to prevent rapid drying.

It's easy to apply by roller, brush or spray, and is coloured yellow so you can see where you've treated. When the primer is diluted, it can cover up to 600 square metres. However, you can also apply it neat to correct extremely dry surfaces

• Lengthens the working time of plasters on very high suction background by helping them retain water, and minimises potential for adhesion failure caused by rapid dry-out
• Yellow in colour - easy to avoid missing any areas
• Can be diluted - normally 1 part to 5 parts water provides adequate suction control, or can be used neat if necessary to control extremely severe suction
• One tub covers up to 600 sq.m (diluted 1:5) or 100 sq.m undiluted
• Easily applied by suitable roller, brush or spray Large container allows application directly from the tub
• Helps to consolidate dusty backgrounds

Thistle GypPrime: Effective Suction Control for Plastering

Thistle GypPrime is a specialised primer developed by British Gypsum to control suction on high-suction backgrounds before applying plaster. Ideal for creating an optimal base, Thistle GypPrime is particularly effective on surfaces like dry or porous backgrounds, ensuring even absorption and improving plaster adhesion.

Key Benefits of Thistle GypPrime

• Reduces Background Suction: Thistle GypPrime is designed to control the rate of absorption on highly porous surfaces, ensuring plaster sets evenly and remains workable.
• Enhances Plaster Adhesion: By reducing suction, Thistle GypPrime helps plaster adhere better, minimising cracking and creating a more durable finish.
• Versatile Application: It is suitable for a wide range of backgrounds, including masonry, concrete, and undercoat plasters.

How to Apply Thistle GypPrime

Proper application is key to achieving the best results with Thistle GypPrime. Follow these steps for effective use:

1. Surface Preparation: Ensure the background is clean, dry, and dust-free. Remove any loose debris to provide a smooth, ready surface.
2. Mixing: Stir Thistle GypPrime thoroughly before use. Dilute with water as required, with a maximum ratio of 1 part GypPrime to 5 parts water for high-suction surfaces.
3. Application: Apply Thistle GypPrime with a roller or brush, covering the surface evenly. Take care to protect adjacent areas from splashes.
4. Drying: Allow Thistle GypPrime to soak into the background and dry to a tacky finish before plastering.

Technical Specifications

Tips for Optimal Results

• Avoid Freezing: Store Thistle GypPrime in a cool, dry area, above freezing temperatures.
• Monitor Ambient Temperature: Keep the application area above 5°C to ensure proper adhesion and drying.
• Protect Surfaces: Ensure surrounding surfaces are protected to prevent splashes and stains.

Common Questions about Thistle GypPrime

Can I apply Thistle GypPrime on low-suction surfaces?

While Thistle GypPrime is most effective on high-suction surfaces, it can be used on other backgrounds if additional suction control is required. However, other primers may be better suited for non-porous surfaces.

What happens if I apply plaster before Thistle GypPrime is dry?

Applying plaster on a wet primer can result in uneven drying, which may impact adhesion and durability. Ensure that Thistle GypPrime is tacky or fully dry before proceeding with plaster application.

Conclusion

Thistle GypPrime is an essential product for plasterers working with high-suction backgrounds. By effectively managing absorption, it improves plaster adhesion, prevents issues like cracking, and contributes to a more professional and durable finish. For more tips on plastering techniques and products, visit the British Gypsum website or explore other resources on plasteringfx.com.