Extruded Closed-Cell Polyethylene Rod
An inexpensive, yet effective "backing", commonly referred to as Backer Rod. Backer Rod is an extruded, chemically inert, closed cell polyethylene "rope" designed to effectively fill in the gaps between logs prior to the application of Perma-Chink or Energy Seal. Backer Rod is flexible and compressible; it conforms to the irregularities in the log surface. Its primary function is recognized as a median between the log gap and the chinking. Select the proper Backer Rod that fits flush with the logs. For example, 3/8" rod should be used if your finished chinking application it to be approximately 1" wide (for a 6" thick round log). Place the rod in the joint. Be sure the edges are flush with the log surface. Before you install Backer Rod make sure gap is free of moisture and foreign material. Directly place it into the gap using a blunt tool or the tips of your fingers. Apply Energy Seal over Backer Rod according to manufacturer's instructions.
Joint Strip
Extruded Closed-Cell Polyethylene
Joint Strip is a closed-cell product. Under normal use, it will not cause out gassing unlike bead-board, blue board, or pink board can. Its unique design provides an excellent fit and surface within the chink joint. This results in a savings in material used and improved R-value.
