Caulk Backer Rods

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Frost King C21H Caulk Saver, 3/8 in Dia, 20 ft L, Polyfoam, Gray

Poly foam caulk savers are used behind caulks to fill wide cracks and save on caulk.
$3.79

Frost King C22H Caulk Saver, 1/2 in Dia, 20 ft L, Polyfoam, Gray

Poly foam caulk savers are used behind caulks to fill wide cracks and save on caulk.
$3.99

M-D 71464 Backer Rod, 3/8 in Dia, 20 ft L, Polyethylene, Gray

Non-absorbent, closed-cell polyethylene pre-caulking material helps repel moisture. Use before caulking to fill gaps and openings larger than 1/2 x 1/2 in. Prevents 3-point bonding.
$3.99

M-D 71480 Backer Rod, 1/2 in Dia, 20 ft L, Polyethylene, Gray

Non-absorbent, closed-cell polyethylene pre-caulking material helps repel moisture. Use before caulking to fill gaps and openings larger than 1/2 x 1/2 in. Prevents 3-point bonding.
$4.59

M-D 71506 Backer Rod, 5/8 in Dia, 20 ft L, Polyethylene, Gray

Non-absorbent, closed-cell polyethylene pre-caulking material helps repel moisture. Use before caulking to fill gaps and openings larger than 1/2 x 1/2 in. Prevents 3-point bonding.
$4.59

M-D 71550 Backer Rod, 3/8 in Dia, 350 ft L, Polyethylene, Gray

Fills gaps and openings to prevent drafts. Provides a sound surface for caulking projects.
$54.99

M-D 71551 Backer Rod, 1/2 in Dia, 250 ft L, Polyethylene, Gray

Fills gaps and openings to prevent drafts. Provides a sound surface for caulking projects.
$44.99

M-D 71552 Backer Rod, 5/8 in Dia, 150 ft L, Polyethylene, Gray

Fills gaps and openings to prevent drafts. Provides a sound surface for caulking projects.
$34.99

Quick R BR38120 Backer Rod, 3/8 in Dia, 120 ft L

Use before applying caulk on new construction or remodeling. For walls, floors, trim, sidewalks, windows and doors. Closed-cell.
$14.99

Quick R BR58060 Backer Rod, 5/8 in Dia, 60 ft L

Use before applying caulk on new construction or remodeling. For walls, floors, trim, sidewalks, windows and doors. Closed-cell.
$14.99

Quick R BR78040 Backer Rod, 7/8 in Dia, 40 ft L

Use before applying caulk on new construction or remodeling. For walls, floors, trim, sidewalks, windows and doors. Closed-cell.
$14.99

SIKA 108130 Backer Rod, 3/4 in Dia, 20 ft L, Gray

Use to partially fill deep cracks or joints before applying sealant. 3/4 in closed cell.
$7.99