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    ​​​​​MasterSeal NP 472 - Multipurpose, building joint polyurethane sealant with good weathering and tear resistance


    How does MasterSeal NP 472 work?

    MasterSeal NP 472​ is a high-performance one component, moisture curing, polyurethane sealant in construction. The product has been formulated to offer a non-slump elastomeric seal in properly designed and constructed joints, exhibiting good skin formation time, and a fast cure.

    What is MasterSeal NP 472 recommended for?

    MasterSeal NP 472 has been developed specifically for sealing dynamically moving joints such as expansion and control joints. MasterSeal NP 472 demonstrates high elasticity and recovery properties and therefore may be used to bond and seal most common building materials including concrete, glass, wood, stone, metal, and anodized aluminum. In addition, MasterSeal NP 472, our polyurethane sealant, has excellent tear resistance and good weathering characteristics.

    Recommended uses of MasterSeal NP 47​​​2 include 

    • Interior and exterior applications
    • Construction and expansion joints in buildings and civil structures
    • Joints in precast concrete elements
    • External walling and cladding joints

    What are the benefits of MasterSeal NP 472?

    • Single component – easy to use
    • Primer free – faster and easier application​
    • Non-staining – better aesthetic retention
    • Low modulus – durable and resilient seal
    • Excellent non-sag properties – easy application on vertical surfaces and soffits
    • Faster skinning time – early resistance to rain and low risk of dirt pickup
    • Good resistance to dilute acids and alkalis – wider application range

    Download the MasterSeal NP 472 Technical Data Sheet

    ​​What is the purpose of joint sealants?

    ​The integrity of a structure is often as good as the sealants used whenever two surfaces are joined together. Generally, joint sealants perform four basic functions: 

    • ​Prevent the passage of air, water and other environmental elements in or out of a structure
    • Accommodate movement of structures
    • Adhere to a wide variety of substrate materials to which they are applied to
    • Prevent the intrusion of solid materials which could block the joint space and prevent movement​​
    Basic functions of joint sealants by Master Builders Solutions

    How to install MasterSeal sealants

    ​When working with sealants, the most common cause of "callbacks" is sealant failure due to improper surface preparation and sealant application. Master Builders Solutions defines the five basic steps below for proper joint preparation and sealant application. Care must be taken during each of these steps to ensure the successful installation of our MasterSeal sealants.

    MasterSeal sealants installation guide by Master Builders Solutions

    Other Joint Sealant Sol​utions

    ​MasterSeal NP 474 - Resilient, durable primerless polyurethane sealant and adhesive​​

    ​ MasterSeal CR 460 - Polyurethane joint sealant


    Brochure: MasterSeal Sealants

    pdf (3.65 Mb)

    Joint Sealants - Solution for Durability and Movement

    pdf (8.78 Mb)

    MasterSeal NP 472: Techincal Data Sheet

    pdf (225.10 Kb)


    Bellandur Lake project reference

    pdf (460.68 Kb)

    Brochure - Construction Solutions for Power and Industry

    pdf (1.50 Mb)

    Brochure - Introduction to Master Builders Solutions

    pdf (2.60 Mb)

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    Download the BIM object for MasterSeal NP 472

    Download the BIM object for MasterSeal NP 472