Backing Materials

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Round Backer Rod

Backer Rod is an extruded, round, closed cell polyethylene foam designed to effectively fill the gaps between logs prior to the application of log caulking. Backer Rod is flexible and compressible; it conforms to the irregularities in the log surface.
Log Gap Caps for Full Log Insulation

Easy to use pre-cut foam inserts for sealing trim around doors and windows. If you have log siding, use Log Gap Caps for Log Siding.
Grip Strip Trapezoidal Backer Rod

Grip Strip Backer Rod makes it easier to maintain a consistent thickness of sealant across the seam, reducing the amount of sealant required and improving the sealant’s performance. Grip Strip’s unique design provides an excellent fit and surface within the chink joint so there is no need for staples, nails or glue.
Log Gap Caps for Log Siding

The Siding Profile Log Gap Cap for Log Siding is an easy-to-use, pre-cut foam insert specially designed to more closely match the unique curvature of log siding applications for sealing around doors and windows. If you have full log building, use Log Gap Caps for Full Log Insulation.