BACKER ROD 3/8", BY THE FOOT (1050' SPOOL)

-Controls the amount of sealant used. Backer rod prevents you from overfilling joints, which can waste sealant and make it more difficult to achieve a neat finish.
-Forces sealant into contact with the sides of the joint. This creates a stronger, more effective seal.
-Acts as a bond breaker to prevent three-sided adhesion of the sealant. This allows the sealant to expand and contract as needed without cracking or failing.
-Creates the optimal sealant width-to-depth ratio. This is important for ensuring a durable and watertight seal.

Benefits of using backer rod:

-Saves sealant: Backer rod prevents you from using more sealant than necessary, which can save you money in the long run.
-Improves seal performance: Backer rod helps to create a stronger, more effective seal by forcing sealant into contact with the sides of the joint and acting as a bond breaker.
-Extends sealant life: Backer rod creates the optimal sealant width-to-depth ratio, which helps to prevent the sealant from cracking or failing over time.

Applications for backer rod:

-Window and door installation
-Caulking and chinking log homes
-Sealing masonry joints
-Filling gaps around pipes and wires
-Sealing cracks in concrete and asphalt