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

Safety Data Sheet

Safety Data Sheet (SDS)

Find all available safety data sheets for this product.


BASF Corporation Technical Support

Construction Systems Phone: 1-800-243-6739


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