M-D Gray Caulk Backer Rod, Gaps/Joints, 5/8 in. x 20 ft. - 71506

$ 4.00

The MD Building Products 5/8 in. x 20 ft. Gray Caulk Backer Rod for Gaps and Joints acts as a filler in large gaps before applying caulk. It insulates as well as cushions. Use in pavement cracks, wall joints and foundations. Backer rod is easily trimmed to size with scissors.
  • 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
  • Easily trimmed to size with scissors
  • Multiple strands of cord can be twisted together for extra-large gaps