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Backer Rods

Closed cell polyethylene foam backing rods for use as a backer for elastomeric and other cold-applied sealants in expansion joint sealing to avoid three sided adhesion.

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Backer Rods
  • Quick and easy to use
  • Non-absorbent, repels moisture
  • Reduces sealant consumption
  • Improved sealant performance due to correctly sized joints
  • Avoids 3-way bonding
  • Highly flexible
  • Resistant to rot
  • Compressive and elastic
  • Supports the sealant during curing and finishing
  • Can be used internally or externally
  • Compatible with Bond It silicones and sealants
  • Inserted into joints as a backer to control sealant depth and establish correct joint dimensions, allowing proper sealant tooling in construction and glazing applications.
  • Acts as a bond-breaker, preventing three-sided adhesion without bonding to the sealant.
  • Suitable for use in glazing installations, expansion joints, window and door perimeters, copings and pavement joints.
  • Closed-cell polyethylene construction provides good insulation and creates an effective thermal break.
  • Highly moisture resistant, helping to prevent water ingress within joints.

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Technical Data Sheet

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Practical how-to guides covering preparation, application and finishing tips for common building and repair tasks. Designed to support both trade professionals and DIY users using Bond It products.

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