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766 Limestone & Masonry Prewash
Item # 20035
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About 766 Limestone & 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.

  • 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.
Product Details   Details product line logo
766 Limestone & Masonry Prewash
Ship ID (see info below)
1/5 gal   
54 lbs   

32/5 gal   
1735 lbs   

Ship ID
Keep From Freezing
Freeze Point
Flash Point
Shelf Life
Yes No 28  NA  2  yrs 44155 SUB 3 
Description: UN3266, Corrosive liquid, basic, inorganic, n.o.s. (Sodium Hydroxide), 8, II