Sikaflex 1A is a premium, one-component polyurethane sealant designed for professional-grade joint sealing in construction applications. Its non-sag consistency makes it ideal for vertical and overhead joints, delivering a durable, flexible seal that accommodates movement while maintaining strong adhesion. Sikaflex 1A Colonial White Polyurethane Sealant – High-Performance, Non-Sag Construction Sealant

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Item #: SIKA-1A-CWHT-20
Availability: Stock
Usually ships In 2-5 Business Days
  • Eliminates time, effort, and equipment for mixing, filling cartridges, pre-heating or thawing, and cleaning of equipment
  • Fast tack-free and final cure times.
  • High elasticity - cures to a tough, durable, flexible consistency with exceptional cut and tear-resistance.
  • Stress relaxation.
  • Excellent adhesion - bonds to most construction materials without a primer
  • Excellent resistance to aging, weathering.
  • Proven in tough climates around the world.
  • Odorless, non-staining.
  • Jet fuel resistant.
  • Certified to the NSF/ANSI Standard 61 for potable water.
  • Urethane-based; suggested by EPA for radon reduction.
  • Paintable with water-, oil- and rubber-based paints.
  • Capable of 35% joint movement.
  • Chemical Resistance Good resistance to water, diluted acids, and diluted alkalines. Consult Technical Service for specific data.
  • Sold: 20 pcs/case

Available in- White, Aluminum Gray, Limestone, Black, Colonial White, Capital Tan & Dark Bronze

Price: $295.00

    Sikaflex 1A is a premium, one-component polyurethane sealant designed for professional-grade joint sealing in construction applications. Its non-sag consistency makes it ideal for vertical and overhead joints, delivering a durable, flexible seal that accommodates movement while maintaining strong adhesion.

    Engineered for long-term performance, Sikaflex 1A bonds to a wide variety of substrates including concrete, masonry, aluminum, steel, and wood—making it a versatile choice for both new construction and repair projects.

    Meets Federal specification TT-S-00230C, Type II, Class A. Meets ASTM C-920, Type S, Grade NS, Class 35, use T, NT, O, M, G, I; Canadian standard CAN/CGSB 19.13-M87.

    Sold 20 per case

    SEE COLOR CHART IN ADDITIONAL INFORMATION TAB BELOW