PROSOCO Blok-Guard & Graffiti Control VOC 15 – High-Solids Graffiti & Water Repellent (5 Gal)

HIGH-PERFORMANCE MASONRY PROTECTOR

PROSOCO Blok-Guard & Graffiti Control VOC 15 is a high-performance, solvent-based silicone elastomer designed to protect porous masonry surfaces from water intrusion and repeated graffiti attacks. Its higher solids content delivers enhanced protection while maintaining the natural appearance of the substrate.

This penetrating treatment fills surface pores to prevent water penetration and reduce moisture-related damage such as efflorescence and staining. Ideal for exterior applications, it performs well on concrete block, brick, tile, and natural stone, especially on hard-to-seal surfaces exposed to harsh weather conditions.

FEATURES / BENEFITS

• Provides long-lasting graffiti protection and simplifies cleanup
  
• High-solids formula for enhanced durability and performance
  
• Deep-penetrating water repellency for porous masonry
  
• Effective on hard-to-seal surfaces
  
• Helps control efflorescence, mildew, and moisture staining
  
• Maintains natural appearance—no visible film
  
• Excellent UV stability for exterior use
  
• Suitable for spray, brush, or roller application
  
• 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: 15%
  
• Weight per Gallon: 10.62 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
• LEED Verification Letter