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