• One-Component Convenience: No mixing or heating required.
• Flexible & Durable: High elasticity and ±35% joint movement capability.
• Excellent Adhesion: Bonds to concrete, aluminum, glass, wood, and other construction materials without primer.
• Weather & UV Resistant: Proven durability in tough climates.
• Wide Service Temperature: From −40°F to +170°F.
• Paintable: Accepts water-, oil-, and rubber-based paints.
• Safe for Potable Water: NSF/ANSI 61 certified.
• Jet Fuel & Chemical Resistance: Suitable for industrial and commercial settings.
• Use on Damp or Green Concrete: Can be applied 1 hour after wetting or 24 hours after pouring.
• Non-Staining & Non-Sag: Suitable for vertical and overhead joints.
• Multiple Colors Available: Includes black, gray, white, bronze, tan, and custom architectural colors.

Sikaflex-1A is suitable for a wide range of structural and sealing applications:

• Window and door frames
• Roof flashing and reglets
• Precast concrete and expansion joints
• Submerged joints (canals, reservoirs)
• Sealing between dissimilar materials
• Construction adhesive for elements subject to movement
• Joint sealing in green (24 hrs) or damp concrete (1 hr) conditions

Common Substrates:

• Concrete
• Aluminum
• Glass
• Wood
• Masonry
• Metal
• Painted surfaces
• Brick/block
• Stone

Surface Preparation

• Surfaces must be clean, sound, frost-free, and free from oil, grease, and loose particles.
• Roughened surfaces improve adhesion.
• Remove curing compounds, sealers, or coatings.
• Use bond breaker tape or backer rod as needed.
• Priming typically not required except in submerged conditions.

Application Instructions

• Temperature Range: 40°F to 100°F
• Joint Design: Width-to-depth ratio of 2:1; minimum depth ¼", maximum ½"
• Insert nozzle to bottom of joint and apply in steady flow to avoid air entrapment.
• Tool immediately to ensure full contact and remove excess material.
• Paintable after full cure (7 days recommended).
• Use opened units the same day to avoid premature curing.

Cleanup

• Clean tools and equipment with xylene before material cures.
• Cured sealant must be removed mechanically.