Sure Klean® 766 Limestone & Masonry Prewash

Sure Klean® 766 Limestone & Masonry Prewash is a powerful, alkaline-based masonry cleaner formulated to remove deep-seated carbon buildup, heavy pollution stains, and mildew from natural stone and masonry surfaces. Designed for historic building restoration and commercial masonry cleaning, this prewash is ideal for use before Sure Klean® Limestone & Masonry Afterwash or Sure Klean® Restoration Cleaner to ensure thorough removal of stubborn contaminants.

Sure Klean® 766 is highly effective on brick, limestone, sandstone, terra cotta, and other masonry materials, eliminating the need for abrasive cleaning methods like sandblasting. It is easy to apply using a brush or roller, and its non-damaging formula preserves the natural appearance of masonry surfaces while ensuring a deep, even clean.

Key Benefits of Sure Klean® 766 Limestone & Masonry Prewash:

• Removes heavy carbon encrustations, pollution stains, and mildew buildup
• Ideal for historic building restoration and masonry cleaning
• Works on limestone, sandstone, brick, terra cotta, and other masonry surfaces
• Prepares surfaces for final washing with Sure Klean® Afterwash or Restoration Cleaner
• Prevents streaking and discoloration—ensures uniform results
• Does not damage glass or alter masonry surfaces
• Easy application with brush or roller—eliminates the need for sandblasting
• VOC-compliant and environmentally safe

Common Applications:

• Historic preservation and masonry restoration
• Cleaning heavily stained limestone, sandstone, and brick facades
• Commercial and residential building exterior cleaning
• Removing blackened pollution stains from urban structures
• Pre-treatment before final cleaning and sealing of masonry surfaces

💡 Treated surfaces must be neutralized with Sure Klean® Limestone & Masonry Afterwash or Sure Klean® Restoration Cleaner.