Backer Rod definition

Backer Rod means a semi-rigid foam material resembling a rope of various diameters used to fill around pipes, etc., and to assist in making a sealed penetration. For example, where a pipe is inserted through a concrete slab, a length of backer rod is jammed into the opening around the pipe. Caulking is then applied to the space above the backer rod and between the outside of the pipe and the slab opening. The purpose of the backer rod is to hold the semi-fluid caulk in place until it sets or hardens. It is most important that a sealant only adhere to the 2 sides of the joint and not the base of the joint (third side). Adhesion to all 3 sides will prevent the sealant from elongating properly and will cause sealant failure.
Sample 1Sample 2Sample 3
Backer Rod means a semirigid foam material resembling a rope of various diameters used to fill around pipes, large cracks and gaps, etc. and to assist in making a sealed penetration. For example, where a pipe is inserted through a concrete slab, a length of backer rod is jammed into the opening around the pipe. Caulking is then applied to the space above the backer rod and between the outside of the pipe and the slab opening. The purpose of the backer rod is to hold the semifluid caulk in place
Sample 1
Backer Rod means a semi-rigid foam material resembling a rope of various diameters used to fill around pipes, etc., and to assist in making a sealed
Sample 1

Examples of Backer Rod in a sentence

  • Backer Rod: Cylindrical cellular foam rod with surface that sealant will not adhere to, compatible with specific sealant used, and recommended by backing and sealant manufacturers for specific application.

  • All primer left in the pail after priming shall be disposed of and shall not be reused.(b) Joint Installation: (1) Backer Rod Placement.

  • Sealants and Backer Rod: To be installed, where required, in accordance with the sealant manufacturer's specifications and published literature, and using the sealant manufacturer's recommended primers.

  • Backer Rod: Compressible rod stock of expanded, extruded polyethylene.

  • Backer Rod: Expanded, closed-cell polyethylene foam designed for use with cold-applied joint sealant.

  • Backer Rod: Closed-cell polyethylene, in diameter larger than joint width.

  • Sealant Backer Rod: Compressible rod stock polyethylene foam, polyethylene jacketed polyurethane foam, butyl rubber foam, neoprene foam or other flexible, permanent, durable non-absorptive material as recommended for compatibility with sealant by the sealant manufacturer.

  • Polyethylene Backer Rod: preformed, compressible, resilient, nonstaining, nonwaxing, nonextruding strips of flexible material and of size, shape, and density to control sealant depth and otherwise contribute to producing optimum sealant performance.

  • Sealant Backer Rod: Compressible polyethylene foam rod or other flexible, permanent, durable non-absorptive material as recommended by joint sealer manufacturer for compatibility with joint sealer.

  • Backer Rod manufactured by HT TROPLAST or Supreme Industries and by application of weather silicon / sealant of DOW corning / GE silicon make.

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