Sika 106403 Polyurethane Construction Adhesive 10.1 Oz

Product Description

The SIKA 106403 is a high-performance polyurethane construction adhesive formulated for superior bond strength to most construction materials, with particular effectiveness on concrete and masonry surfaces. Supplied in a 10.1 oz cartridge, it delivers approximately 24 linear feet of adhesive when applied as a 0.25-inch bead. The adhesive remains permanently elastic after cure, allowing it to flex with minor movement in building substrates without cracking or losing adhesion. It achieves a tack-free surface in 1 to 2 hours, enabling fast strength build-up. The cured adhesive is paintable, sandable, and stainable, and the product is rated to seal out radon gas. This is a general trades adhesive installed by carpenters, masons, contractors, and general building tradespeople.

The SIKA 106403 is suited for residential and light commercial construction applications where a durable, flexible bond to concrete, masonry, wood, and other common building materials is required. It can be applied as a spread coat, a bead, or in spot-bonding patterns depending on the substrate and load requirements. Its radon-sealing capability makes it a relevant choice for below-grade and foundation-adjacent assemblies. Fresh adhesive should be cleaned up immediately; cured adhesive requires paint thinner or an approved solvent for removal.

Key Features

• Polyurethane formula bonds to concrete, masonry, wood, and most common construction materials
• Permanently elastic cure accommodates minor substrate movement without bond failure
• Tack-free in 1 to 2 hours for fast strength development
• Seals out radon gas, suitable for below-grade and foundation applications
• One 10.1 oz cartridge yields approximately 24 linear feet at a 0.25-inch bead
• Paintable, sandable, and stainable after cure
• Color: Gray

Compatibility

Designed for use on concrete, masonry, and most standard construction materials in residential and light commercial building applications. Can be applied as a bead, spread coat, or spot bond depending on the assembly requirement.

Installation Notes

Apply using a standard caulk or cartridge gun. Ensure all bonding surfaces are clean, dry, and free of loose material before application. Clean up fresh adhesive immediately; remove cured adhesive with paint thinner or an approved solvent. Follow all applicable local building codes and the adhesive manufacturer guidance for ventilation when working in enclosed or below-grade spaces.

Technical Specifications

• Net Fill: 10.1 oz
• Adhesive Type: Polyurethane
• Color: Gray
• Tack-Free Time: 1 to 2 hours
• Coverage: Approximately 24 linear feet at 0.25-inch bead per cartridge
• Weight: 1.121 pounds
• UOM: Each
• UPC: 00033886000475

Standard Information

• Brand: SIKA
• Manufacturer Part Number: 106403