BASF MasterProtect H 1000 is a clear, breathable, high-performance, 100% silane, water repellent sealer that achieves the highest depth of penetration. As you apply H 1000, there will be no need to prep/mask windows or to clean up afterwards and since it leaves no residue, it will not harm glass windows, metal frames, or painted surfaces. H 1000 is 100% silane, protects against chloride ion penetration and provides excellent depth of penetration while allowing breathability which allows interior moisture to escape without damaging the sealer itself. Being solvent-based, H 1000 is excellent for cold weather applications. This product protects the structure from damage caused by wind-driven rain and other harsh weather systems. H 1000 will not alter the surface's look and helps reduce efflorescence, atmospheric staining, and mildew. BASF H 1000 is an excellent water repellant, penetrates deeply and chemically reacts within the pores of concrete to provide long-lasting protection. H 1000 is abrasion-resistant so it provides long-lasting protection to horizontal substrates subject to traffic, such as bridge decks and highway surfaces.