1/2 inch Non-Porous Polyethylene Caulk Backing Rod
1/2″ caulk backing rod fills deep joints and cracks and establishes a flat, continuous surface for applying caulking and sealants, as most caulks and sealants are designed for use in joints not exceeding 1/2″ in depth to allow for proper curing, and for economic reasons.
1/2″ Caulk Backing Rod Specification;
– Caulk backing rod is made of non-porous polyethylene.
– Will not rot, swell or strain.
– Sold per foot.