High-Performance, Solvent-Based Water Repellent for Masonry Surfaces Biokil Crown Alkali-Resistant Silicone Water Repellent is a clear, solvent-based treatment designed to protect masonry surfaces from penetrating damp. Its advanced formulation offers excellent resistance to alkalis, making it particularly effective on new brickwork and fresh pointing, where other repellents may fail. The product penetrates deeply into substrates, providing long-lasting protection while allowing the surface to breathe. Key Features & Benefits Alkali Resistance: Ideal for new masonry and fresh pointing, resisting degradation in alkaline conditions. Deep Penetration: Ensures effective water repellency by penetrating deeply into the substrate. Breathable Protection: Allows moisture vapor to escape, preventing trapped dampness. Long-Lasting: Provides up to 15 years of protection with a two-coat application. Versatile Application: Suitable for use on concrete, roughcasts, renders, sandstone, synthetic stone, and new brickwork. Product Details Appearance: Clear liquid. Base: Silicone resin in white spirit. Coverage: Approximately 3–5 m² per litre per coat, depending on substrate porosity. Packaging: Available in 5L and 25L containers. Storage: Store in a cool, dry place away from direct sunlight and sources of ignition. Application Instructions Surface Preparation: Ensure surfaces are clean, dry, and free from contaminants. Remove any loose material, dirt, or biological growth. Application: Apply using a brush, roller, or low-pressure spray. For best results, apply two coats, allowing the first coat to dry before applying the second. Drying Time: Surface dry in approximately 1 hour; fully cured after 24 hours. Clean-Up: Clean tools and equipment with white spirit immediately after use. Limitations Not suitable for use on painted or sealed surfaces. Do not apply if rain is expected within 24 hours or if temperatures are below 5°C. Ensure adequate ventilation during application and drying. Health & Safety Flammable. Keep away from sources of ignition. Use protective gloves and eye protection during application. Avoid inhalation of vapors. Refer to the Safety Data Sheet (SDS) for detailed information on handling, storage, and disposal.
