MasterSeal NP1 is a moisture-curing polyurethane sealant engineered for high-performance sealing of joints in residential and commercial applications. This versatile sealant provides permanent elasticity, allowing it to flex and move with joint expansion and contraction without losing its integrity. Whether you’re sealing expansion joints in driveways, securing window frames, or working on interior or exterior projects, the NP1 delivers durable, watertight results that last for years.
The sealant bonds effectively to concrete, masonry, aluminum, and wood without requiring a primer, making it an efficient choice for a wide variety of substrates. Its smooth finish can be painted over, allowing seamless integration with your project’s aesthetics. With a low volatile organic compound (VOC) level, it’s a safer option for indoor applications while delivering the strength and flexibility professionals and DIY enthusiasts need for reliable long-term performance.
Features and Benefits
- Moisture-Curing Formula: Cures through exposure to moisture in the air and substrate, ensuring permanent elasticity and consistent performance over time.
- Flexible Joint Accommodation: Designed to accommodate significant joint expansion and contraction, making it ideal for areas that experience temperature fluctuations or structural shifts.
- Fast Curing: Skins over in 24 hours and reaches full cure within 5 to 7 days, allowing efficient project completion and faster turnaround.
- Strong Multi-Substrate Bonding: Bonds effectively to concrete, masonry, aluminum, and wood without the need for primer application.
- Paintable and Long-Lasting: Dries smooth and accepts paint for seamless aesthetics; provides up to 15 years of reliable service.
- Low VOC: Low volatile organic compound formulation makes it safer for indoor use and environmentally conscious projects.
- Made in the USA: Domestically produced sealant supporting local manufacturing.
Specifications
- Brand: MasterSeal
- Model: NP1STN12
- Size: 10.1 Oz.
- Color: Stone
- Type: Polyurethane sealant
- Cure Method: Moisture-curing
- Applicable to: Vertical, horizontal, and active joints; expansion wall joints, floor and pavement joints, curtain walls, and window frames
