ROUND BACKER ROD
- Round closed cell material backer rod
- Water resistant - repels water to protect the joint from damage
- Fully compatible with all substrates & sealants
- Saves money - fill the joint so you can use less caulk
- Use for sidewalk/driveway cracks, doors, window frames, sill plates, wall cracks, and more.
- Oversized/Non-standard package rate weight