Sika 3/4 in. x 20 ft. Closed Cell Backer Rod, Expansion Joint Polyethylene Foam

Sika Backer Rod is used to partially fill deep expansion joints and cracks before application of your sealant. It helps prevent 3-sided adhesion while allowing you to control the depth of the sealant. Available in 3/4 in., 20 ft. length.

• Closed cell compressible backup material to control joint depth
• Prevents 3-sided adhesion
• Will not absorb water