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2-1/2 in. Backer Rod, Closed Cell (6 Ft) - 2-1/2 in. DIAMETER POLY BACKER ROD, CLOSED CELL, NON-STICK SKIN, 6-FOOT PIECE. PRICE/PIECE. Special Sale ! (color could be white, gray or charcoal; not selectable).
2-1/2 in. Backer Rod, Closed Cell (6 Ft)
$5.50 SALE $4.75
(Savings: $0.75)
 Buy 27 or more and pay $4.41 each (save $1.09) 
 Buy 108 or more and pay $4.12 each (save $1.38) 
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PRODUCT: 2-1/2" DIAMETER POLY BACKER ROD, CLOSED CELL, NON-STICK SKIN. 6-FOOT PIECE. PRICE/PIECE. Special Sale Price! (color could be white, gray or charcoal; not selectable).
  • 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.
  • Provides controlled depth for sealants.
  • Compresses up to 50% in smaller sizes and 30% in large  sizes.
  • Does not stick to sealants. Exceeds ASTM standards for bond breakering 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   Diameter
3/16"            1/4"
1/4"              3/8"
3/8"              1/2"
1/2"              5/8"
5/8"              3/4"
3/4"                    1"
1"                 1-1/4"
1-1/4"           1-1/2"
1-5/8            2"
2"                 2-1/2"
2-1/2"           3"
3-1/2"           4"
1. Joint or opening should be clean and dry and free of all contaminates, loose materials, dry, and free of water or frost.
2. To install, compress backer-rod into the joint
before sealants are applied. Install backer-rod using a blunt tool or a plain faced roller.
3. Force the rod to the depth recommended by sealant manufacturer, (typically about 1/2 of joint width measured at the crown of the backer rod). A template or roller gauge may be used to control the depth at which the rod is placed.

4. 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 sides of joint is necessary to assure good adhesion of sealant, primer should be applied only to the joint surfaces and allowed to dry before Backer-Rod is placed. DO
NOT prime Backer-Rod.
tags / similar product terms: backer rod, closed cell backer rod, closed celled backer rod, caulk backing, sealant backing, Crl Closed Cell Backer Rod, tundra foam, closed cell rod, closed celled foam, closed celled rod, closed celled backer rod, mile high foam

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