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MasterSeal NP 1 – A One Component Formula, Many Uses

Master Builders MasterSeal NP 1
July 11, 2021 at 9:00 a.m.

By Master Builders Solutions. 

This elastomeric, polyurethane sealant is perfect for interior and exterior use, and requires no mixing prior to usage. 

The one-component, high-performance, non-priming, gun-grade elastomeric polyurethane sealant, MasterSeal NP 1, is available now for your use. NP stands for non-priming, and this product requires no mixing before bonding to most materials including concrete and masonry. Another interesting feature of Master Builders Solutions product is its ability to reduce sound transmission when used as an acoustic sealant. MasterSeal NP 1 also supports high STC values by sealing the spaces or gaps around cut-outs and at perimeters of partitions. 

Recommended uses: 
  • Interior and exterior use 

  • 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 

  • Adheres to new concrete after 72 hours 

Learn more about Master Builders Solutions in their RoofersCoffeeShop® Directory or visit www.master-builders-solutions.com.  

Original article source: Master Builders Solutions 



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