Backer Rod - Cold (HBR) 7/8", 850/Box
Brand Crafco, Inc
BackerRod - Cold (HBR) 7/8", 850ƒ/Box
HBR is a closed-cell, polyethylene foam backer rod joint filler that is used as a backing material for elastomeric and other cold-applied sealants. It helps the sealant assume the optimum shape to prolong service life and acts as a barrier to the flow of sealant through the joint. It will not absorb water and is available in ?¬ to 6 diameter.
7/8 (22 mm)
850ƒ (259 m)
11/16 (18 mm)
HBR helps cold-applied sealants assume the optimum hour glass shape to prolong the sealant service life. It is commonly used in applications such as expansion and contraction joints, curtain walls, construction partitions, parking decks and bridge construction.
Easy to use
Use with cold-applied sealants
Made in USA
Meets all requirements of the 1990 Clean Air Act
Is a ƒDomestic End Product as defined in Buy American Act, Title 41 USC 10
HBR is an inert material, and therefore, it is physically and chemically compatible
with virtually all known cold-applied sealants including self-leveling types. Sealant compatibility should be confirmed by the sealant manufacturer. Compatibility characteristics of sealants in contact with sealant backings can be determined by ASTM C 1087 test method.
Prior to installing HBR, the joints should be cleaned per the sealant manufacturerƒs recommendations. Thoroughly remove any concrete form-release agents, curing compound reside, laitance or any foreign materials. To ensure a good sealant bond, joints must be clean and dry when the new sealant is installed. Air compressors used for this purpose must be equipped with traps for removal of oil and moisture. Install HBR with a blunt tool to the depth recommended by the sealant manufacturer.
Care should be taken not to puncture or over-compress HBR during installation. Proper size selection is important as it controls the depth of the sealant bead. It must be oversized (25-50%) to fit tightly into the joint and function as a bond-breaker to prevent back-side adhesion of the sealant. HBR is not meant to be used with hot-pour sealants.
FORM: Round Foam Rod.
TYPE: C - Per ASTM C 1330. Cylindrical, flexible sealant backings composed predominantly of closed cell material per ASTM C 1330 for use with cold applied sealants.
TYPE: 3 -Per ASTM D 5249. Round rods of various diameters for use with cold-applied joint sealants.
TEMPERATURE LIMITS: -45 F to +160 F.