Foam Backer Rod

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    Closed cell foam backer rods ideal for applying to cracks and joints when sealing gaps in expansions joints to obtain the correct joint dimensions for sealants, preventing three-sided adhesion in wide or deep joints.

    Simply press the backer rod into the gap or joint prior to applying sealant to create a uniform joint that requires far less sealant material to fill, which results in a greatly reduced cure time.