MasterSeal NP 1 is a high-performance, elastomeric polyurethane sealant that offers unmatched versatility and durability for interior and exterior applications. This one-component, gun-grade sealant requires no mixing, making it easy to use and helping to reduce labor costs. With a joint movement capability of ±35%, MasterSeal NP 1 provides excellent flexibility, ensuring weathertight seals in even the most demanding conditions.
Suitable for use above and below grade, as well as in water immersion applications, MasterSeal NP 1 is the ideal choice for a wide range of projects, including expansion joints, panel walls, precast units, aluminum and wood window frames, roofing, fascia, parapets, vinyl siding, and storefront assemblies. The sealant's easy-to-gun and tool formula speeds up application and creates neater joints, while its primer-free application on most construction materials helps to lower installation costs. MasterSeal NP 1 is weather-resistant, compatible with non-rigid coatings, and offers superior holding power for long-lasting roof tile installation. Available in 12 standard colors and suitable for a wide temperature application range, this UL-listed sealant meets VOC requirements in all 50 states and is backed by documented performance in wet areas.