Sika Backer Rod 3/4" x 20' 108130. A 3/4 inch closed cell compressible backup material. It is inserted into a joint to control sealant depth and to prevent 3 sided adhesion.
Easy to apply Highly flexible and compressible Will not absorb water Good temperature resistance Partially fills deep cracks before sealant application
This low density polyethylene foam is ideal for glazing installations, expansion joints, window and door perimeters, copings, and pavement joints. Resists oil and most other solvents. Available in 3/4" x 20 ft. bag.