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2 in. Backer Rod, SOFT (6 feet) - 2 inch Diameter Poly Backer Rod, SOFT with Non-Stick Closed Cell Skin. 6 Foot Piece. Price/Piece. (color may be gray or charcoal and is not selectable; UPS Shipping only)
2 in. Backer Rod, SOFT (6 feet)
$4.25 SALE $3.45
(Savings: $0.80)
 Buy 38 or more and pay $3.05 each (save $1.20) 
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PRODUCT:  2" 2 inch Diameter Poly Backer Rod, SOFT with Non-Stick Closed Cell Skin. 6 Foot Piece. Price/Piece.

Ordering Notes: color can be gray or charcoal and is not selectable; available 228'/ 38/carton; UPS shipment only

  • General Purpose Sealant backing
  • Together with Self-leveling sealant
  • Expansion joints
  • Irregular joints
  • Metal and pre-cast panels
  • Around perimeters of door and window frames,
  • Coping and glazing joints
  • Log Homes
  • Round poly foam joint filler and backing for sealants.
  • Provides controlled depth for sealants.
  • Compresses easily for accommodating joints of varying widths.
  • Does not stick to sealants. Exceeds ASTM standards for bond breaker materials.
  • Consists of both open and closed cells on the inside with a skin-like outer texture. Non-stick closed cell skin. High moisture resistance.
  • Compatible with all known types of sealants including butyl, polyurethane, silicones, tri-polymer, 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"    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
tags / similar terms: backer rod, soft celled backer rod, chinking, chink backing, caulk backing, sealant backing, sealant support, caulk support, soft cell foam, closed cell foam rod, log home chinking

  Associated Items:  
2 in. Backer Rod, SOFT (box/228 feet)
2 inch Diameter Poly Backer Rod, SOFT with Non-Stick Closed Cell Skin. Cut to 6 Foot Pieces. 38 Pieces/Box (228 feet). Price/Box. (UPS Shipping only)
$128.00 $113.95
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