SOF® Rod is a soft bi-cellular polyethylene foam backer rod used in concrete construction. It is comprised of both open and closed cells that will not out-gas whenskin is ruptured and prevents
sealant bubbling and failure.

SOF Rod has an outer skin and resilient interior network of cells and helps cold-applied sealants assume the optimum hour glass shape to prolong the sealant service life. It is commonly used in applications such as expansion and contraction joints, window glazing, curtain wall construction
partitions, parking decks, bridge construction, modular home gasketing and log home chinking.
SOF Rod is comprised of an inert material, and therefore, it is physically and chemically
compatible with virtually all known cold-applied sealants including self-leveling types.