M-D Building Products 71480 Backer Rod for Gaps & JointsM-D Building Products 71480 Backer Rod for Gaps & Joints Features: Non-absorbent, closed-cell polyethylene pre-caulking material Use before caulking to fill gaps and openings larger than 1/2″ x 1/2″ Prevents 3-point bonding 20′ 71464: 3/8″ 71680: 1/2″ 71506: 5/8″
Poly Foam Caulk Saver acts as a filler in large gaps before applying caulk. Insulates and cushions. Use in pavement cracks wall joints and foundations.
- The product is 1/2″x20′ Caulk Back Rod
- Easy to use
- The product is manufactured in China
- Fills large gaps and openings to prevent drafts
- Provides a sound surface for caulking projects
- Recommended for use in expansion joints in driveways and sidewalks
- Twist multiple strands of cord together for extra large gaps