Backer Rod - Closed Cell 4" - 54 LF
Backer Rod is sold by the Box
Standard Backer Rod is an
extruded closed cell, round polyethylene foam material with skin-like
texture. Compatible with with butyl, polysulfide, acrylic, polyurethane,
silicone and most cold sealants.
We stock Closed Cell Backer Rod in diameters from 1/4" up to 6"
Note: Backer Rod is inexpensive, but can be expensive to ship. This
is because of the large volume of space it takes in boxes. Dimensional
weight applies. More information is
here: UPS Dimensional Weight and Oversized Packages
( Be sure to call us about bulk shipping rates)
Helps prevent clogging of expansion joint with mortar and is the accepted material for brick and block expansion joint fillers.