- Made from non-absorbent compressible material for optimal sealing
- Enables filling large gaps and openings to prevent drafts
- Measures 1,100 ft. L x 3/4 in. Dia
Backer rod is an ideal non-absorbent compressible backup material inserted into a joint to control sealant depth. This creates a backstop to allow proper sealant tooling and proper sealant of the joint surfaces. Backer rod can also be used as a temporary joint seal.