Cylindrical Shape Foam Rubber Backer Rod For Gaps And Joints / Crack Repair

Backer Rod is an integral component of sealant joints, it provides three main functions that allow the sealant joint to perform.

Acts as a bond breaker, preventing what is commonly referred to as three sided adhesion.
The backer rod supports tooling. the sealant is pushed to the bond line with a spatula, ensuring wet-out of the sealant to the substrate.
Promotes an hour glass shape, this maximizes the bond area but keeps the depth of sealant consistent in the middle allowing for movement.

Features

1. No shrinkage, additionally superb resilience.
2. Because of Closed cell structure it has tremendous water resistance.
3. Suitable for all weather, though inert to major acids due to PE.
4. Easy to install.
5. Light weight, as a result easy to handle.
6. Large range of sizes available.

Surface Preparation

Make sure logs and log gaps are free of moisture and foreign material such as dirt, dust, pollen, mildew and mold.
Application Conditions

Apply in dry weather. Trapped moisture can cause sealants to blister.

Installation

Joint or opening should be clean, dry and free of all contaminates and loose materials.
Compress backer rod into the joint using a smooth blunt tool or a plain faced roller.
Gently force backer rod into the joint so that the backer rod fits right against the side of the joint. backer rod should be at least 3/8th inch below the desired finish level of the sealant.
Apply masking tape over any joints in the backer rod.
Do not stretch, puncture or tear backer rod during installation.