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Backer Rod

Closed-Cell Foam Rope

Backer Rod is extruded closed-cell polyethylene rod that is used in cracks, checks and gaps before filling them with sealants such as Perma-Chink, Energy Seal and Check Mate 2. Caulk joints should not be more than 3/8” thick and Backer Rod provides a way to fill a deep crevice or gap while maintaining the proper sealant thickness for maximum performance. Backer Rod should also be used in checks over 1/4” wide before applying Check Mate 2.

  • Closed cell polyethylene
  • Will not absorb water
  • Heat and cold stable.
  • Should be used to assure proper thickness of sealants including Perma-Chink, Energy Seal and Check Mate 2

Backer Rod Available Sizes

Backer Rod Available Sizes

Foam backer rod for narrow gaps and checks in logs.

1 Box = 2 rolls of backer rod. We do sell individual rolls of backer rod.

Tools FAQ

Yes. For proper adhesion and elasticity of sealants, backing materials should be used. Read more here.

Tools Reviews