Weberprim C 70 – Acrylic-Based Exterior Primer
Weberprim C 70 is a filled, acrylic emulsion-based primer designed for exterior surface applications. It is developed to improve adhesion on highly absorbent substrates, reduce the consumption of topcoat paints or coatings, and prepare surfaces for finishing applications. It is particularly effective on cement-based renders, exposed concrete, and aerated concrete surfaces, helping to enhance overall paint performance and durability.
Application Areas
Exterior Surface Applications
- Cement-based renders
- Exposed concrete surfaces (treated with weber.tec R, RK, or RM systems)
- Aerated concrete (rendered surfaces)
Undercoat Applications for Decorative Coatings
- webertex multicolor
- webertex p-color
Other Applications
- Properly prepared existing surfaces
Technical consultation is recommended before application on different substrates.
Advantages
- Provides excellent adhesion to the substrate
- Reduces topcoat paint consumption
- Balances the absorbency of highly porous surfaces
- Easy to apply using a roller or brush
- Improves the performance and durability of exterior paints and coatings
Application Conditions
- Ambient temperature: +5°C to +30°C
- Do not apply in extremely hot, humid, or direct sunlight conditions
- Do not apply on frozen surfaces or surfaces at risk of freezing
Application Method
Dilution
- Dilute at a ratio of 10:1 (primer : water)
Mixing
- Mix thoroughly until a homogeneous consistency is achieved
- Stir periodically during application to prevent settling
Application
- Apply a single coat using a textured roller or brush
Waiting Time
- Wait at least 12 hours before applying paint or decorative coatings
Drying Time
Consumption
- Approximately 7–10 m² per liter (single coat)
Technical Information
- Product form: Liquid
- Density: 1.54 g/cm³
- Colors: Available in 5 color options
- Packaging: 7.5 L and 15 L plastic buckets
- Shelf life: 12 months under suitable storage conditions
Storage
- Store in a cool and dry environment
- Keep the container tightly closed when not in use
- Protect from frost and freezing temperatures
- Do not stack pallets on top of each other
Warnings and Recommendations
- Do not apply to wet or damp surfaces
- Clean application tools with water before the material dries
- Continue stirring the product during application
- Technical values are based on laboratory conditions at 20°C
Safety Precautions
- Wear protective gloves and a dust mask during application
- Avoid contact with eyes and skin
- In case of contact, rinse thoroughly with plenty of water and seek medical advice if necessary
- Refer to the Material Safety Data Sheet (MSDS) before use
Frequently Asked Questions (FAQ)
1. Which surfaces can Weberprim C 70 be applied to?
It can be applied to cement-based renders, exposed concrete, rendered aerated concrete surfaces, and as a primer under exterior coatings and paints.
2. What is the drying time?
The minimum drying time is approximately 12 hours.
3. Can the product be applied without dilution?
No. It must be diluted with water at a ratio of 10:1 (primer : water).
4. Can it be applied on wet surfaces?
No. The surface must be completely dry before application.
5. When can paint be applied after priming?
Painting or coating applications can begin after a minimum waiting period of 12 hours.