This system is designed to provide effective and long-lasting protection for exterior building facades, including stone, brickwork, plaster, and natural stone. It is based on a solvent-based, colorless silicone water repellent that penetrates deeply into the substrate, forming a breathable, water-repellent barrier that prevents water ingress while allowing vapor diffusion. The system protects surfaces against rain, CO₂, and dust contamination without altering their natural appearance. It reduces dirt pick-up, maintains the original color, and enhances resistance to harsh weather conditions. Easy to apply by brush, roller, or spray, it ensures uniform coverage and durable performance across a wide range of mineral substrates.