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Blok-Guard & Graffiti Control


Sure Klean® Weather Seal Blok-Guard® & Graffiti Control is a clear, solvent-based silicone elastomer formulated to weatherproof custom masonry units, cast stone, architectural concrete block, precast concrete, wood and other porous masonry materials. Blok-Guard & Graffiti Control protects masonry surfaces from repeated graffiti attacks without altering the natural appearance.

  • Treated surfaces resist penetration of most types of graffiti
  • Controls rainwater penetration through exterior block walls.
  • Simplifies graffiti removal.
  • Treated surfaces “breathe” – does not trap moisture.

Theoretical Coverage:  
Concrete Block: 30 - 100 square feet per gallon
Concrete:  75 - 175 square feet per gallon.



 Product Number Description Size
 PS 400930 1GAL Blok-Guard  1 gal
  PS 400930 5GAL  Blok-Guard  5 gal

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