Chimney Rx Masonry Chimney Water Repellent is a modified siloxane based product, specifically designed for chimneys, that penetrates deeply into most masonry and concrete pores. Unlike acrylics, silicones, and other waterproofing sealers that form a film on the surface and trap water vapors, this product allows deep penetration of the active ingredients of up to 1/4 inch or more.
As a result, the special siloxanes in Chimney Rx Masonry Chimney Water Repellent react to form strong chemical bonds beneath a treated surface. These bonds allow the chimney water repellent to become a physical part of the structure and provide long-lasting, water-repellent protection without altering the appearance of the brick.
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