Professional-grade soft bi-cellular polyethylene backer rod designed for filling expansion joints, control joints, and gaps prior to sealant application in concrete, masonry, and construction projects. Manufactured by NOMACO with SOF construction in soft formulation, 5/8-inch diameter, and extra-long 1550-foot length for high-volume commercial and residential applications. This soft, flexible bi-cellular polyethylene foam rod provides proper backing for sealants in narrower joints, compresses easily, controls joint depth, prevents three-sided adhesion, and reduces sealant consumption while ensuring optimal joint performance in concrete slabs, sidewalks, and building envelope applications.
SAFETY
FEATURES AND BENEFITS
Bi-Cellular Polyethylene Construction: Soft formulation with extra-flexible foam compresses easily into irregular joints and tight spaces
5/8-Inch Diameter: Ideal for narrower expansion joints and control joints in concrete and masonry work
1550-Foot Length: Extended roll provides maximum coverage for large projects, minimizing material changes
SOF Backer Rod Design: Soft closed-cell polyethylene foam stays compressed in joints and maintains proper backing
Gray Color: Neutral appearance suitable for visible joints and professional installations
Prevents Three-Sided Adhesion: Allows sealant to adhere only to joint sides, not bottom, for proper movement
APPLICATIONS
Backing for narrower concrete expansion and control joint sealants
Concrete slab joint preparation before caulking (narrower joints)
Sidewalk and driveway expansion joint backing
Masonry control joint backer rod installation
Building perimeter joint sealing preparation
Curtain wall and window/door perimeter joints
Parking lot and plaza joint sealing (narrower joints)
Irregular or tight joints requiring soft, compressible backing
High-volume commercial and residential construction joint preparation
SPECIFICATIONS / COMPLICANCE
Diameter: 5/8 inch
Length: 1550 linear feet per roll
Material: Bi-cellular polyethylene (soft backer rod foam, closed-cell formulation)
Color: Gray
Type: Soft backer rod
Manufacturer: NOMACO
Product Type: Bi-cellular polyethylene soft backer rod / backing rod / joint filler
Application: Expansion joint backing, control joint preparation, sealant depth control, construction joint sealing in narrower joints
