MasterSeal NP 1 One-component, elastomeric, gun-grade polyurethane sealant How does MasterSeal NP 1 work? MasterSeal NP 1 is a one-component, high performance, non-priming, gun-grade, elastomeric polyurethane sealant. It requires no mixing and typically requires no priming to bond to many materials, including concrete and masonry. Recommended uses: Interior and exterior Above and below grade Immersed in water Expansion joints Panel walls Precast units Aluminum and wood window frames Roofing Fascia Parapets Vinyl siding Store front assemblies What are the unique features of MasterSeal NP 1? Available in ProPaks, reducing jobsite waste, lowering disposal costs 12 standard colors to match a wide variety of common substrates Wide temperature application range makes MasterSeal NP 1 suitable for all climates UL listed; Passes 4–hour, 4–inch, fire and hose stream test when used with Ultra Block or mineral wool Suitable for water immersion with documented performance in wet areas Meets VOC requirements in all 50 states What are the benefits of MasterSeal NP 1? One-component formula requires no mixing, helping to reduce labor costs Joint movement capability ±35% provides excellent flexibility for keeping moving joints weathertight Easy to gun and tool, speeding up application and making neater joints No primer required for most construction materials lowering installation costs Weather resistant for long-lasting weather tight seals Compatible with non-rigid coatings and can be painted Superior holding power for long-lasting roof tile installation