REARM STONE GUARD – S is a ready-to-use, solvent-based, colourless water repellent designed to protect building surfaces from moisture ingress and long-term weather exposure. Formulated with silicon-based technology, it penetrates deep into porous substrates and creates durable water repellency without significantly changing the natural appearance of the surface. It is ideal for façades, exposed vertical surfaces, masonry, stone, brickwork, and cement-painted structures where long-lasting protection against rainwater penetration is required.