Prosoco *Weatherseal H40 Deep Penetrate Sealer 5 Gl Pl

5 Gallon Pail, 108 Deg F Flash Point, Liquid, Petroleum Odor, Clear Sure Klean® Masonry Strengthening Water Repellent

Sure Klean® Weather Seal H40 is a deep-penetrating water repellent and consolidation treatment for brick, most natural stone, unglazed terra cotta, historic concrete, stucco and cast stone surfaces. H40 protects against deterioration caused by water and waterborne contaminants while strengthening weathered surfaces and soft mortar joints. Weather Seal H40 also reduces the severity of biological staining common to regions with high relative humidity. It helps prevent the rapid decolonization of biological species such as mold, mildew and lichens that normally thrive on masonry and natural stone architecture.