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    ​MasterWeld 420: Rubber-based adhesive for foam insulation and wall panels

    Formerly: Sonneborn 200 Adhesive

    MasterWeld 420 description

    MasterWeld 420 is a ready to use, multipurpose, synthetic rubber based adhesive for bonding foam insulation and other wall panels to various structurally sound substrates.

    Recommended uses

    • Interior or exterior applications
    • In seams and joints subject to excessive, dynamic movement

    What are the unique features of MasterWeld 420?

    • One component
    • Flexible at a wide temperature range, and is nonfreezing
    • Compatible with foam

    What are the benefits of MasterWeld 420?

    • Ready to use formulation improves application efficiency
    • Suitable for low temperature installations applications
    • Will not compromise insulation values

    US / Canada product information

    Data Guide

    Data Guide (French)

    Certification Letter

    LEED Letter

    Product Certifications

    Generate a free certificate of conformance for a specific Master Builders Solutions construction product.

    Related Literature

    Certification Letter

    pdf (89.73 Kb)