Uses

• Priming and sealing exterior concrete surfaces.
• Priming exterior cement-plaster and rendered surfaces.
• Priming compatible exterior gypsum-based surfaces.
• Reducing substrate porosity and uneven absorption.
• Improving the adhesion of exterior decorative coatings.
• Improving the hiding power and uniformity of subsequent topcoats.
• Suitable for residential and commercial buildings.
• Suitable for light-industrial exterior applications.

Advantages

• High-quality water-based acrylic-polymer formulation.
• Excellent penetration into porous substrates.
• Fills surface porosity and controls substrate absorption.
• Improves the hiding power of subsequent exterior topcoats.
• Excellent adhesion to properly prepared substrates.
• Promotes strong adhesion of subsequent coating layers.
• High resistance to alkalinity and salts.
• High resistance to water.
• High durability.
• Fast-drying formulation.
• Ultra-low VOC content.
• Extremely low odour.
• Free from formaldehyde, ammonia and APEOs.
• Non-flammable and easy to clean with water.

Substrate Preparation

The exterior substrate must be structurally sound, clean and free from dust, oil, grease, salts, loose particles and other contaminants or foreign materials that may reduce adhesion.

Remove weak and loosely adhering material using a suitable mechanical preparation method. Repair cracks, holes and surface imperfections using a compatible exterior repair or filling compound before application.

Application Conditions

• The substrate temperature during application must not be below 10°C.
• The substrate moisture content must not exceed 8%.
• The relative humidity must not exceed 70%.
• The substrate pH must not exceed 9.
• Do not apply to wet or damp surfaces.
• Do not apply in unsuitable weather conditions.
• Provide adequate ventilation during application and drying.

Mixing and Dilution

Stir WHITE SAND PRIMER SEALER – EXTERIOR carefully before use. A suitable quantity of clean tap water may be added to obtain the correct application viscosity.

The amount of water depends on the substrate, application method and weather conditions. Do not over-dilute the product.

Application

1. Ensure that the exterior substrate is correctly prepared and completely dry.
2. Apply the primer uniformly using a roller, brush or suitable spray equipment.
3. Ensure complete coverage of the substrate without puddling.
4. Allow the primer to dry for at least two hours at 25°C.
5. Do not apply the subsequent exterior coating until the primer is completely dry.
6. Protect the primed surface from dust, rain and contamination before applying the topcoat.

Yield and Coverage

WHITE SAND PRIMER SEALER – EXTERIOR covers approximately 12 m² per kilogram at a dry-film thickness of 50 microns.

Actual coverage depends on substrate porosity, surface profile, ambient temperature, application method, applied thickness and material wastage.

Cleaning

Clean all tools and equipment with water immediately after application. Hardened material must be removed mechanically.

Storage and Shelf Life

WHITE SAND PRIMER SEALER – EXTERIOR has a minimum shelf life of 12 months when stored in its unopened and undamaged original packaging in a dry and shaded location, protected from direct sunlight, at an ambient temperature below 35°C.

Packaging

• 20 kg plastic pails.
• 25 kg plastic pails.

Health and Safety

• Wear suitable protective gloves and safety goggles during handling and application.
• Avoid unnecessary contact with the skin and eyes.
• In case of skin contact, wash immediately with soap and clean water.
• In case of eye contact, rinse immediately with plenty of clean, cold water.
• Seek medical advice if irritation continues.
• The product is non-flammable.
• The product is not classified as hazardous under current legislation.
• Do not dispose of the material in water or soil.
• Follow applicable local disposal regulations.

Quality and Technical Support

WHITE SAND products are developed and manufactured under a quality-oriented product-development process and an independently standardized quality management system.

WHITE SAND provides technical assistance regarding exterior surface preparation, dilution, primer application and the selection of compatible exterior coating systems.