This water repellent is an architectural grade product that meets all industry guidelines for selection of commercial water repellents for block chimneys and other concrete masonry units (CMUs). This high performance penetrating blend of silane/siloxane and acrylic elastomers bonds with the minerals in blocks and CMUs to provide long-lasting water repellency. ChimneySaver Water Repellent for Block Chimneys is breathable, and treated surfaces show little or no change in color or appearance. Product can be used on dense materials, such as brick when a sheen or gloss is desired.
WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.