PROSOCO Blok-Guard & Graffiti Control VOC 9 – Solvent-Based Graffiti & Water Repellent (5 Gallon)

GRAFFITI & WATER REPELLENT FOR MASONRY

PROSOCO Blok-Guard & Graffiti Control VOC 9 is a clear, solvent-based silicone elastomer designed to protect porous masonry surfaces from water intrusion and repeated graffiti attacks. It penetrates deeply into the substrate, filling pores to provide long-lasting protection without altering the natural appearance.

Ideal for exterior applications, this treatment helps prevent water penetration, reduces moisture-related staining, and simplifies graffiti removal. It performs well on concrete block, brick, tile, and natural stone, even on hard-to-seal surfaces exposed to harsh weather conditions.

FEATURES / BENEFITS

• Protects against graffiti and simplifies removal
  
• Provides deep-penetrating water repellency
  
• Ideal for hard-to-seal masonry surfaces
  
• Helps control efflorescence, mildew, and moisture staining
  
• Maintains natural appearance—no surface film
  
• Excellent UV stability for long-term exterior performance
  
• Suitable for application by spray, brush, or roller
  
• Resists water penetration over hairline cracks (≤ 0.02")

TECHNICAL DATA

• Form: Clear liquid, petroleum odor
  
• VOC Content: ≤100 g/L
  
• pH: Not applicable
  
• Coverage Rate: 30–250 sq. ft. per gallon
  
• Shelf Life: 1 year (unopened)
  
• Freeze Point: < –22°F (–30°C)
  
• Flash Point: 100°F (38°C)
  
• Total Solids: 9%
  
• Weight per Gallon: 10.85 lbs

AVAILABLE SIZES

• 5 Gallon

RESOURCES

• Product Data Sheet
• Product Data Sheet (Canadian French)
• Safety Data Sheet
• Safety Data Sheet (Spanish)
• SDS Canadian French
• VOC Compliance
• 3-Part Specification