Sika 515311 Polyurethane Construction Sealant 10.1 Oz

Product Description

The SIKA 515311 is a ready-to-use, commercial-grade polyurethane construction sealant supplied in a 10.1 oz cartridge. It is formulated for sealing cracks, construction joints, doors, windows, siding, roofing, gutters, sills, thresholds, basements, vents, skylights, wall penetrations, and precast panels. The sealant cures to a permanently elastic, tough, and flexible consistency that resists cutting, tearing, aging, and weathering. It will not harden or shrink after cure. A single 10.1 oz cartridge yields approximately 24 linear feet at a 1/4 inch bead width. Contractors and building professionals across construction and restoration trades rely on this sealant for demanding interior and exterior applications.

This sealant is suited for both residential and commercial construction projects. It bonds to most common building materials including concrete, wood, brick, aluminum, steel, glass, tile, marble, stone, and etched PVC. Typical install scenarios include sealing penetrations in above-grade and below-grade assemblies, flashing details at windows and doors, roofing transitions, and precast concrete panel joints. It also seals out radon gas, making it appropriate for basement and foundation applications where soil-gas intrusion is a concern. After full cure, the sealant is paintable, sandable, and stainable.

Key Features

• Permanently elastic cure — resists cutting, tearing, aging, and weathering without hardening or shrinking
• Seals out radon gas — suitable for basement and below-grade foundation use
• Adheres to concrete, wood, brick, aluminum, steel, glass, tile, marble, stone, and etched PVC
• Paintable, sandable, and stainable after cure for finish-work compatibility
• One 10.1 oz cartridge yields approximately 24 linear feet at a 1/4 inch bead
• Meets Federal spec TT-S-00230C Type II Class A and ASTM C-920 Type S Grade NS Class 25

Compatibility

Designed for use on most common building substrates including concrete, wood, brick, aluminum, steel, glass, tile, marble, stone, and etched PVC in residential and commercial construction assemblies.

Installation Notes

This sealant is applied by licensed contractors, general tradespeople, or qualified applicators using a standard caulk gun. Surfaces must be clean, dry, and free of loose material before application. Fresh sealant can be cleaned up immediately with water or approved solvents; cured sealant requires paint thinner or another approved solvent for removal. Follow all applicable building codes and manufacturer surface-preparation guidelines for the specific substrate.