Backer Rod Closed Cell Backer Rod Bulk Roll (1/2" Thick - 2500 FT)

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🛠️ Seal smarter, save bigger — the pro’s choice for flawless joints!

This 1/2" thick, 2500-foot bulk roll of closed-cell backer rod from Randall Manufacturing offers a flexible, waterproof, and non-absorbent solution designed to control sealant depth and improve joint sealing efficiency. Made to ASTM C1330 Type C standards, its smooth skin surface ensures optimal sealant bonding while reducing material waste, making it ideal for professional construction and weatherization projects.