766 Limestone and Masonry Prewash

Sure Klean® 766 Limestone & Masonry Prewash is a strong, alkaline-based cleaning compound formulated for use with Sure Klean® Restoration Cleaner, Limestone & Masonry Afterwash or Limestone Restorer. When used properly, the prewash dissolves and assists in removing heavy carbon encrustations from brick, terra cotta, sandstone, limestone and most other masonry. Old masonry in high-pollution areas is often blackened by deep-seated carbon and mildew stains. Many of these stains are impervious to standard acidic-based cleaning compounds. Sure Klean® 766 Limestone & Masonry Prewash provides the additional chemical ingredients necessary to clean extremely dirty masonry surfaces.



  • Cleans the dirtiest masonry surfaces without sandblasting or extensive labor.
  • Ideal for spot treating heavily stained areas, such as horizontal surfaces, under window sills, eaves, etc., where carbon and mildew stains are most severe.
  • Does not damage or alter masonry surface.
  • Easy to apply with brush or roller.
  • Will not damage glass.


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TBP Group Business Office Thoms Drive Suite 411  Phoenixville, PA 19460
Phone 610-482-6001  Fax 610-933-4910  email: sales@tbphilly.com