Polyethylene Backer Rods 20mm x 3.5m (3pcs per pack) caulk back up rod back up rod Foam stick rod

Diameter: 20mm

Length: 3.5m

Color: white

Quantity: 3pcs per pack

Description: Backer rods are round, flexible lengths of polyethylene foam that are used as a “backing” in joints or cracks to help control the amount of sealant/caulking used and create a back stop. Many sizes/diameters are available for optimal fitting to the size of the joint being sealed.

Backer Rod’s benefits:

•Increase elasticity in the joint sealant.

•Reduce caulk consumption by controlling sealant depth— this prevents excessive use of caulking or sealant.

•Force adhesive into contact with the sides of the joint creating an hour-glass shape for a superior bond.

•Create a “bond-breaker” which allows the joint to be easily cleaned out and refilled as needed over time.For bulk orders, send us a message for a more competitive pricing.