• Textured Finish: Blends with masonry and concrete surfaces
• Gun-Grade, Non-Sag Formula: Clean vertical and overhead applications
• Moisture-Curing System: Creates a tough, elastic seal
• ±25% Movement Capability: For dynamic joint sealing
• Excellent Primerless Adhesion: To porous substrates like concrete, brick, and masonry
• Paintable Once Cured: Adhesion testing recommended for coatings
• Accelerated Cure Option: Use with Vulkem® Catalyst 45/116
• Approved for Water Immersion: In select applications (see datasheet)
• Compliant With:
  • ASTM C920 Type S, Grade NS, Class 25
  • U.S. Federal Spec TT-S-00230C, Class A, Type II
  • CAN/CGSB-19.13-M87
  • USDA & Canadian Food Inspection Agency
  • City of Los Angeles approved

Ideal For: General-purpose sealing of dynamic joints in commercial construction

Typical Uses:

• Precast and poured concrete joints
• Window and door perimeters
• Masonry joints
• Wall panels and façade systems
• Exterior vertical joints
• Stucco or EIFS terminations (verify compatibility)

Exterior Use Only: Not for use indoors, even in unoccupied spaces

Common Substrates:

• Concrete (poured/precast)
• Brick and CMU block
• Natural and cast stone
• Wood (bare or painted with proper prep)
• Metal (cleaned and primed if required)
• Stucco and textured surfaces

Surface Prep

• Surfaces must be dry, clean, and sound
• Use two-cloth cleaning method with xylene for non-porous substrates
• Remove all contaminants, form release agents, and loosely bonded materials
• Prime porous substrates if required using Vulkem® Primer #171
• Prime non-porous substrates if required using TREMprime® Non-Porous Primer

Joint Design

• Minimum joint size: ¼" wide by ¼" deep
• Movement capability: ±25% of joint width
• Use backer rod or bond breaker tape to control depth and prevent 3-point adhesion
• Follow ASTM C1193 and ASTM C1472 for optimal joint design

Application

• Use a professional-grade caulking gun
• Fill joint from back to front to avoid air pockets
• Tool sealant with rounded spatula to achieve concave profile and full contact with joint sides
• Tool within 6 hours before skin forms
• Dry tooling only – do not use water, soap, or lubricants

Curing

• Tack-free in ~30 hours
• Full cure time varies with temperature and humidity
• Do not disturb sealant during curing
• Adhesion may take up to 2+ weeks to fully develop – test for critical applications