Sika 515309 Polyurethane Construction Sealant 10.1 Oz

Product Description

The SIKA 515309 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, wall penetrations, and a wide range of building envelope applications including doors, windows, siding, roofing, gutters, sills, thresholds, basements, vents, skylights, and precast panels. The cured sealant is permanently elastic, tough, and flexible, with strong resistance to cutting, tearing, aging, and weathering. It will not harden or shrink after cure. Licensed contractors, commercial glaziers, and general trade professionals working on new construction or renovation typically install this product.

This sealant is suited for both residential and commercial applications wherever a durable, flexible joint seal is required. It is appropriate for use on building envelopes, mechanical room penetrations, foundation walls, and exterior cladding systems. Its ability to seal out radon gas makes it a practical choice for basement and below-grade penetration work. One 10.1 oz cartridge yields approximately 24 linear feet of sealant applied in a 1/4 inch bead. After cure, the sealant is paintable, sandable, and stainable, making it compatible with most standard finish workflows.

Key Features

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

Compatibility

Designed for use on most common building materials including concrete, wood, brick, aluminum, steel, glass, tile, marble, stone, and etched PVC. Suitable for construction joints, doors, windows, siding, roofing, gutters, sills, thresholds, basements, vents, skylights, wall penetrations, and precast panels.

Installation Notes

Apply to clean, dry, and frost-free surfaces for best adhesion. Standard caulk gun tools are used for cartridge application. Clean up fresh sealant immediately; cured sealant should be removed with paint thinner or another approved solvent. Follow all applicable building codes and sealant manufacturer surface-preparation requirements before application.

Technical Specifications

• Product Type: Polyurethane Construction Sealant
• Net Weight (cartridge): 10.1 oz
• Package Weight: 1.109 pounds
• Color: White
• Coverage: 24 linear feet at 1/4 inch bead
• Shelf Life: 12 months
• Standards: Federal TT-S-00230C Type II Class A; ASTM C-920 Type S Grade NS Class 25
• UPC: 00033886093873

Standard Information

• Brand: SIKA
• Manufacturer Part Number: 515309