MasterSeal NP 1: One-component, elastomeric, gun-grade polyurethane sealant
Formerly: Sonolastic NP 1
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
