The Tremco Soft Backer Rod – 1/2" Diameter Foam Sealant Backing Rod is a dependable joint filler designed to enhance sealant performance in commercial and residential construction projects. Sold by the roll, this backer rod comes in gray and features a 1/2" diameter with a convenient 20' roll length for easy transport, cutting, and installation.
Manufactured from durable polyethylene foam (closed cell), this soft backer rod functions as a resilient backing and thickness control device for elastomeric and other cold-applied sealants. It helps maintain proper joint depth, ensuring optimal sealant performance and long-term durability. Because sealant does not bond to the backing rod, it allows the sealant bead to stretch and recover with joint movement while minimizing stress at adhesion points.
Ideal for glazing systems, expansion joints, window and door perimeters, curtain walls, and precast concrete panels, Tremco backer rod improves joint design and promotes longer-lasting, flexible seals in demanding applications.
Note: No returns on consumable supplies.
