6 in. Backer Rod, Closed Cell (6 Ft) - 6 inch Diameter Poly Backer Rod, Closed Cell, White Color, Non-Stick Skin, 6-Foot Pieces (actual size varies ~69-72 inches). Price/Each.
6 in. Backer Rod, Closed Cell (6 Ft)
$34.00 SALE $26.55
(Savings: $7.45)
 Buy 60 or more and pay $24.95 each (save $9.05) 
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PRODUCT: 6" Diameter Poly Backer Rod, Closed Cell, White Color, Non-Stick Skin, 6-Foot Pieces (actual size varies ~69-72 inches). Price/Each.

  • 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, WHITE color, firm, resilient, polyethylene extruded closed celled foam with a water resistant outer skin.
  • Provides controlled depth for sealants.
  • Compresses up 25% in very large size.
  • Does 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.
  • CARTON PACKING: 15 pieces/carton, 36 lbs, 24x19x76 inch size).

SIZING BACKER-ROD:  Select a backer-rod diameter that is approximately 25% larger than the width of the joint for very large sizes. Large size do not compress as easily.

Joint Width  Recommended Diameter
1-1/4" - 1-1/2"   2"
2" - 2-1/2"         3"
2-1/2" - 3-1/2"   4"
3-1/2" - 4-1/2"   5"
4-1/2" - 5-1/2"   6"
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 joint; 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!
similar product terms: backer rod, tilt wall seal, tilt wall sealant, tilt wall gap seal, caulk backing, sealant backing, sealant support, caulk support, soft cell foam, closed cell foam rod, log home chinking

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