Sashco Coiled Pre-Caulking Backer Rods

Backer materials that seal things right the first time. Backer rod helps you create the ideal joint design for a long-lasting, durable seal. Closed-cell round backer rod is the product you need prior to chinking or caulking your log home. It not only acts as insulation but repels moisture, too. The closed-cell round backer rod also serves as a bond-breaker between two logs and provides a structure against which you can apply chinking and caulk more uniformly in order to achieve an ideal joint. Sealants and chinking do not adhere to the backer rod – only to the log surfaces of the joint – allowing for movement without damaging the sealing material.

• Backer materials ensure that all-important two-point adhesion so the sealant stretches and compresses correctly over time
• Fills in the joint so you use less materials and save money
• Closed cell so that, even if a random tear shows up, moisture will not soak into the backer material and fester and rot.
• Where to Use:
  • Interior & exterior wherever caulking and chinking are being applied.
  • Cracks & checks
  • Inbetween log courses
  • Around windows and doors
• Where Not to Use:
  • Any joint smaller than 1/4″ deep and 1/4″ wide – backer rod won’t fit