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7/8 in. Backer Rod, Soft (Per Foot) - 7/8 in. DIAMETER POLY BACKER ROD, SOFT, NON-STICK CLOSED CELLED SKIN, PRICE/FOOT. ORDER BY THE FOOT. (custom-cut items are non-returnable or cancellable)
 
7/8 in. Backer Rod, Soft (Per Foot)
BACKER-ROD-78
$0.35 SALE $0.20
(Savings: $0.15)
 
 Buy 200 or more and pay $0.17 each (save $0.18) 
 Buy 400 or more and pay $0.15 each (save $0.20) 
 
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PRODUCT:  7/8" DIAMETER POLY BACKER ROD, SOFT, NON-STICK CLOSED-CELLED SKIN. PRICE / FOOT. (custom-cut items are non-returnable or cancellable)

APPLICATIONS:
  • General purpose sealant backing
  • Use together with vertical or self-leveling sealants
  • Use above ground and for vertical joints
  • Expansion joints
  • Irregular joints
  • Metal and pre-cast panels
  • Around perimeters of door and window frames,
  • Coping and glazing joints
  • Log Homes
DESCRIPTION:
  • 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 know types of sealants including butyl, polyurethane, silicones, tri-polymer, polysulfide, acrylic, etc.
SIZING SOFT BACKER-ROD:
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"
 
APPLYING BACKER ROD:
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.

PRIMING:
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
 
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
 

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