We offer two types of Water Repellents (respectively named as) namely Nanosil and Nanosil S. Our Nanosil is economical, multi-purpose, water-based water repellent. Our Nanosil forms strong permanent bonds beneath the surface of substrate and creates a hydrophobic zone (film) & reduces its porosity. This prevents water molecules from penetrating, while allowing free migration of water vapors. The chemical bonds formed in this process allow Nanosil to become an integral part of the substrate. Our Nanosil provide long-term water repellent protection and helps to over come the problem of efflorescence and algae / fungus formation on the surface. Our Nanosil S is a multi-purpose, solvent-based water repellent. Our Nanosil S penetrates up to 1/4 inch or more into treated surfaces and bonds with the substrate to provide long lasting hydrophobic protection. Our Nanosil S is applicable even at hairline cracks, allowing interior condensation to escape while preventing exterior moisture, rain etc. from entering into the surface.