Sikaflex NP 2 – Multi-Component Polyurethane Joint Sealant (1.5 Gallon Unit)

Sikaflex NP 2 (formerly MasterSeal NP 2) is a multi-component, highly flexible, non-priming, high-performance polyurethane joint sealant. It is designed for use in demanding interior and exterior joints, including above- and below-grade applications and joints exposed to water immersion. With excellent adhesion to most common construction substrates and a non-sag formulation, Sikaflex NP 2 delivers durable, weather-tight seals on vertical and horizontal joints.

The sealant offers a long working time with a chemical cure, making it ideal for larger or complex joint layouts where extended tooling time is important. Sikaflex NP 2 can be tinted to multiple colors, allowing you to match surrounding finishes and maintain a clean architectural appearance.

Benefits

• Multi-component, chemical-cure polyurethane for durable, long-lasting joints
• Non-sag formulation suitable for vertical and overhead applications
• Movement capability of up to ±50% for dynamic and structural joints
• Non-priming on most common construction substrates (verify with Sika for critical applications)
• Extended working time for easier placement and tooling
• Excellent weather and aging resistance for interior and exterior conditions
• Available in tint base and standard colors to match architectural finishes

Applications

• Expansion and control joints in concrete and masonry
• Precast and tilt-up panel joints
• Panel walls and curtain walls
• Aluminum and wood window and door frames
• Roofing, fascia, parapets, and exterior transitions
• Parking structures and other traffic-grade vertical or non-submerged joints
• Joints exposed to water immersion when properly detailed and primed per Sika recommendations