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2 in. Backer Rod, Closed Cell, Carton (252 ft.) - 2 inch Diameter Backer Rod, CLOSED CELL, 252 FT/Carton in  6-Foot Lengths (42 pieces). Price/Carton. (color could be gray or charcoal)
2 in. Backer Rod, Closed Cell, Carton (252 ft.)
$154.00 SALE $120.95
(Savings: $33.05)
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PRODUCT: 2" Diameter Backer Rod, CLOSED CELL, 252'/Carton in 6-Foot Lengths (42 pieces). Price/Carton. (color could be gray or charcoal).
  • High moisture environments
  • Ground based expansion joints
  • General purpose sealant backing
  • Use together with self-leveling sealant
  • Highway joints
  • Parking garages
  • Around perimeters of door and window frames,
  • Coping and glazing joints
  • Log Home chinking
  • Isolation joints
  • Round, firm, resilient, polyethylene extruded closed celled foam with a water resistant outer skin. Color could be gray or charcoal and is NOT SELECTABLE.
  • Provides controlled depth for sealants.
  • Compresses up to 50% in smaller sizes and 30% in large sizes.
  • D oes not stick to sealants. Exceeds ASTM standards for bond breaker materials. No bond breaker is required.
  • Very high moisture resistance. Will not absorb ground water.
  • Compatible with all know types of sealants including butyl, polyurethane, silicones, tri-polyimer, polysulfide, acrylic, etc.

Select a backer-rod diameter that is approximately 25% larger than the width of the joint.

Joint Width  Recommended Diameter
3/16" - 1/4"       3/8"
3/8" - 1/2"         5/8"
1/2" - 3/4"         7/8"
3/4" - 7/8"      1-1/8"
7/8" - 1-1/4"   1-1/2"
1-1/4" - 1-1/2"   2"
2" - 2-1/2"         3"
2-1/2" - 3"         4"
1. Joint fillers have three major functions:
  • Controls depth of the sealant in proper
    relation to joint width
  • Provides backing against which the sealant
    is applied, forcing the sealant to the sides of the
  • Prevents 3-sided bonding, ensuring proper
    function of sealant
2. To install, compress backer-rod into the joint
before sealants are applied. Joint or opening should be clean and dry and free of obstructions. Install backer-rod using a blunt probe or a plain faced roller to force the rod to the desired depth.
3. Compress to a depth of about 1/2 of the width measured at the crown of the backer rod.

4. A template or roller gauge may be used to
control the depth at which the rod is placed.
5. Don't stretch, puncture or tear backer-rod during installation but gently force into the joint so that the backer-rod fits tight against the sides of the joint.

1. Follow suggestions for joint-sealant application as directed by sealant manufacturer.
2. Where priming of the joint is necessary, primer
should be applied only to the joint surfaces and
allowed to dry before Backer-Rod is placed. DO
NOT prime Backer-Rod
Email us at sales@bestmaterials.com or
Call us at 1-800-474-7570 or 602-272-8128
You'll get a prompt reply!
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