Round Closed Cell Backer Rod - 1/4" x 4000' Coil

Round Closed Cell Backer Rod - 1/4" x 4000' CoilSpecial Note: For smaller orders, a minimum shipping cost of $15 will be applied.Round Closed cell backer rod is probably the most common and popular form of backer rod. It does not hold moisture and actually repels water. Closed cell backer rod comes in a variety of sizes ranging from 1/4" to 5” wide and can be used on both the exterior and interior of the home. Backer Rod is used for Chinking joints greater than 1/4". Backer Rod is a round, flexible length of extruded polyethylene (it looks like a rope made of foam). Backer Rod is used to create a surface backing for the chinking. At the same time, it insulates and saves on the amount of chinking material used. But most important, Backer Rod acts as a bond breaker allowing the chinking to adhere only to the top and bottom of the logs, not to the backer rod. This allows the chinking to flex naturally as the logs shrink, instead of peeling away.Why Use Backer Rod:Backer rod is a bond brea