MasterSeal NP 1
Elastomeric, polyurethane sealant for interior and exterior use
How does MasterSeal NP 1 work?
MasterSeal NP 1 (formerly known as Sonolastic 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. Used as an acoustic sealant, MasterSeal NP 1 reduces sound transmission in partition systems to support high STC values by sealing spaces around cut-outs and at perimeters of partitions.
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
On the job video:
Direct contact
Related Literature
Certification Letter
Color Reference
MasterSeal NP 1 Alumin Gray SDS
MasterSeal NP 1 Alumin Gray SDS
MasterSeal NP 1 Brochure
MasterSeal NP 1 Data Guide
MasterSeal NP 1 Data Guide (French)
MasterSeal NP 1 Gray SDS
MasterSeal NP 1 Gray SDS
MasterSeal NP 1 Gray SDS
MasterSeal NP 1 Gray SDS
MasterSeal NP 1 Gray SDS
MasterSeal NP 1 Guide Spec
MasterSeal NP 1 Limestone SDS
MasterSeal NP 1 Limestone SDS
MasterSeal NP 1 Stone SDS
MasterSeal NP 1 Stone SDS
MasterSeal NP 1 Tan color SDS
MasterSeal NP 1 Tan color SDS
MasterSeal NP 1 Tan color SDS
MasterSeal NP 1 White SDS
MasterSeal NP 1 White SDS
MasterSeal NP1 LST NOCAL SDS
MasterSeal NP1 LST NOCAL SDS
MasterSeal NP1 NOCAL Lst SDS
MasterSeal NP1 NOCAL Lst SDS
MasterSeal NP1 NOCAL Wht SDS
MasterSeal NP1 NOCAL Wht SDS
MasterSeal Single Component Color Reference
Roofing Applications: Sealants and Adhesives Solutions Brochure
Sealant Performance Selection Guide