Backer Rods for Joint and Sealant Applications
Spec Sheets
Nomaco backer rods are available in a variety of shapes and diameters including cylindrical rods, half rounds, quarter rounds, trap rods, tri rods, sheets and rolls. Backer rods are primarily used in expansion and contraction joints and are used to limit the depth of the sealant, help the sealant assume an optimum hourglass shape factor to prolong sealant life, and serve as a bond breaker to prevent bottom-side adhesion of the sealant.
In addition, we offer several specialty backer rods for use in fillet joints and shallow joint reservoirs. Nomaco backer rods are commonly used in joints for curtain wall partitions, bridge and highway construction, parking decks, pre-cast assemblies, glazing applications, and panel systems.
For information regarding Nomaco backer rod compatibility with specific sealants, please contact the sealant manufacturer. Please refer to the matrix below for more information on our backer rod. To view a spec submittal sheet for each product, click on the brand name of the product in the matrix.
| SOF® Rod | Dual Rod® | HBR® | Green Rod® | HBR®XL | FOAM-PAK™II | |
|---|---|---|---|---|---|---|
| Meets ASTM C1330 | X | X | X | X | X | |
| Meets ASTM D5249 | X | X | X | X | X | |
| Meets ASTM C717 | X | X | ||||
| Cold Applied Sealant Use | X | X | X | X | X | X |
| Hot Pour Sealant Use | X | X | ||||
| Round Foam Rod | X | X | X | X | X | X |
| Non-gassing | X | X | X | |||
| Polyethylene | X | X | X | X | X | |
| Polyurethane | X | |||||
| Non-absorbing Skin | X | X | ||||
| Cross-linked | X | |||||
| Prevents Bubbling | X | X | X | |||
| Closed Cell | X | X | X | |||
| Open Cell | X | |||||
| Bi-cellular | X | X | ||||
| Type B | X | X | ||||
| Type C | X | X | X | |||
| Type 1 | X | |||||
| Type 3 | X | X | X | X | ||
| Type O | X | |||||
| Color | Grey | Grey | Grey | Grey | White | Yellow |