TexNov WRS-40 is a high performance water based water-repellent sealant containing silane / siloxane. This is a breathing and colorless product that penetrates deep into the concrete and masonry surfaces to form a permanent bond. TexNov WRS-40 has the ability to resist water without altering the natural appearance of many substrates once dried. It does not form glossy film surfaces like other film forming sealant. 2- Advantages of TexNov WRS-40 Forms as invisible water-repellent barrier to protect a variety of masonry substrates such as natural stone, concrete, cement blocks, architectural concrete, acrylic coatings, bricks, and other masonry products.