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:
How to Apply MasterSeal NP 1 (Spanish)
Safety Data Sheets (SDS):
MasterSeal NP 1
MasterSeal NP 1 - 12 Pack CTG
MasterSeal NP 1 - Alu Gry
MasterSeal NP 1 - Alu Gry PPK
MasterSeal NP 1 - Beige
MasterSeal NP 1 - Black
USA - English
MasterSeal NP 1 - Branco
MasterSeal NP 1 - Cinza
MasterSeal NP 1 - Gray
MasterSeal NP 1 - Limestone
MasterSeal NP 1 - Medium Bronze
MasterSeal NP 1 - Navy Gray
MasterSeal NP 1 - Off White
MasterSeal NP 1 - Redwood Tan
MasterSeal NP 1 - Special Bronze
MasterSeal NP 1 - Stone
MasterSeal NP 1 - Tan
MasterSeal NP 1 - White
Direct contact
Related Literature
Certification Letter
Color Reference
Data Guide (French)
Data Guide (Spanish)
Data Guide MasterSeal NP 1
Guide Spec
Joint Sealants Brochure - Spanish
LEED Letter
LEED Letter
LEED v4 Letter
MasterSeal NP1 Brochure
Roofing Applications: Sealants and Adhesives Solutions Brochure
masterseal-np-1-gs.zip