Rainguard Blok-lok Silane Siloxane Water Repellent Ready-to-Use is a 100% active, water based, low VOC, clear penetrating water repellent with a unique blend of silane/siloxanes and exclusive Micro-Lok formulation for use on vertical concrete, brick, block and other porous surfaces. Blok-lok forms a long-chain water repellent barrier deep within the surface. This hydrophobic barrier repels water and salts yet remains highly vapor permeable, allowing moisture to escape. Blok-lok provides excellent warrantied protection for a wide range of commercial, industrial, infrastructure, residential and restoration projects. Blok-lok Silane Siloxane Ready-to-Use Water Repellent formula means no mixing and use right out of container. Used to seal any vertical concrete, brick, CMU, masonry, block, stucco surface. 1 Gallon Container. 5 year labor and material warranty available and requires filling out application form which can be obtained from Rainguard or Exterior Performance Coatings, Inc. Passed ASTM G-53 Weathering test 2500 hours, Passed ASTM E-514 Wiind Driven Rain test 98 mph (160 kph) Passed ASTM D-1653 100% Vapor Permeable, Salt Pounding NCHRP No. 244 93% reduction chloride ion intrustion/ Coverage rate porous masonry surfaces 50 - 100 sq"/gallon, dense masonry and brick surfaces 100 - 150 sq"/gallon surfaces. 1 Gallon container.