BACKER ROD 5/8″X20′ ROLL 71506 MD POLY

Poly foam caulk saver acts as a filler in large gaps before applying caulkInsulates and cushionsFills large gaps and openings to prevent draftsTwist multiple strands of cord together for extra-large gaps, easily trimmed to size with scissorsNon-absorbent, closed-cell polyethylene pre-caulking materialUse before caulking to fill gaps and openings larger than 1/2 in x 1/2 inPrevents 3-point bonding