MasterSeal NP 100

High-performance hybrid sealant​

How does MasterSeal NP 100 work?

MasterSeal NP 100 is a high-performance, low modulus, high-movement, non-sag, fast-curing, ready-to-use, and non-staining hybrid sealant. It’s formulated with unique polymers that allow for versatile adhesion to a variety of substrates while accommodating high movement and providing long-term durability. ​

Recommended uses:

  • Vertical or horizontal
  • Exterior or interior
  • Above grade
  • For sealing a variety of building joints against water and air intrusion
  • Joints with extreme movement
  • Storefront systems
  • Expansion joints
  • Panel walls
  • Precast units
  • Aluminum, vinyl and wood window frames
  • Fascia
  • Parapets
  • Sanitary applications
  • Roofing

What are the unique features of MasterSeal NP 100?

  • Superior adhesion to a variety of substrates resulting in a long term bond
  • Low modulus, formulated for joint movement of ±50%
  • Resists chalking, cracking and fading to maintain long lasting weather-tight seals
  • Wide temperature application range
  • Several packaging options available including easy to open plastic pails
  • Meets all state and federal VOC regulations
  • Tint Base option available to provide a wide variety of colors

What are the benefits of MasterSeal NP 100?

  • Compatible with elastomeric coatings and can be painted soon after installation
  • Easy to gun and tool, which speeds up application and makes neater joint
  • Fast curing sealant with available accelerator option to speed cure times
  • Non-staining formula for use on stone and other sensitive substrates

US / Canada Product Information

Data Guide

Data Guide (French)

Certification Letter

Guide Spec

LEED Letter

LEED v4 Letter

Color Reference - MasterSeal NP 100

Color Reference - MasterSeal Single Components

Color Portfolio - MasterSeal Most Popular Colors

Safety Data Sheets (SDS):

MasterSeal NP 100

MasterSeal NP 100 - Anodized Aluminum

MasterSeal NP 100 - Aluminum Gray

MasterSeal NP 100 - Black

MasterSeal NP 100 - Buff

MasterSeal NP 100 - Hunter Green

MasterSeal NP 100 - Limestone

MasterSeal NP 100 - Medium Bronze

MasterSeal NP 100 - Off-White

MasterSeal NP 100 - Redwood Tan

MasterSeal NP 100 - Special Bronze

MasterSeal NP 100 - Stone

MasterSeal NP 100 - Tan

MasterSeal NP 100 - Tint Base

MasterSeal NP 100 - White

Direct contact

Master Builders Solutions Technical Support

Construction Systems


Safety Data Sheet (SDS)

Find all available safety data sheets for this product.

Product Certifications

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Related Literature

Certification Letter

pdf (54.02 Kb)

Color Reference

pdf (166.17 Kb)

Data Guide

pdf (136.68 Kb)

Data Guide (French)

pdf (108.21 Kb)

Guide Spec

doc (160.00 Kb)

Joint Sealants Brochure - Spanish

pdf (749.31 Kb)

LEED Letter

pdf (73.02 Kb)

LEED v4 Letter

pdf (285.35 Kb)

Sealant Performance Selection Guide

pdf (872.11 Kb)

zip (46.13 Kb)