Grip Strip Trapezoidal Backer Rod




Grip Strip Backer Rod
Grip Strip Trapezoidal Backer Rod is chemically inert, closed-cell polyethylene foam backer that is trapezoidal shaped ( 4 sided)  to fit between log courses and form a flat surface for the application of Perma-Chink or Energy Seal caulk. 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.

Grip Strip Backer Rod Uses: Provides a uniform flat surface for the installation of Perma-Chink, Energy Seal caulk and other commonly available synthetic chinking.


  • Provides a flat, firm chinking or caulking surface
  • Shape and texture allow it to be easily installed without using staples, nails or glue
  • Grip Strip is closed cell and repels water. Most open cell products absorb water
  • Compatible with all commonly available synthetic chinking
  • Exterior and interior application
  • Helps prevent blistering of chinking surfaces
  • Provides extra insulation against heat loss
  • Comes in a variety of width sizes

Specifications for Grip Strip Backer Rod

Grip Strip is ¾ inch back to front with an “R” value of 1.2.  Length of all strips regardless of width is 4 feet. Height or thickness varies from size to size. Typically Grip Strip  ¾ inch, 2 inch, or 5 inch is the width of the product.

For detailed information on installation, request a Log Home Sealant Guide by calling any customer service representative at 888-208-2248 or email to

Width Sizes

Select the proper Grip Strip size that fits flush with the logs.

Grip Strip Backer Rod is cut to 4 foot length single strips and packaged in 12 x 12 x 50” corrugated cartons.

  • ¾ inch
  • 1 inch
  • 1-1/4 inches
  • 1-1/ 2 inches
  • 3 inches
  • 4 inches
  • 5 inches
  • 6 inches


All orders are shipped by FedEx ground within the continental USA. ships 99% of all orders within 24 hours of receipt from our warehouse in Western N.C.




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