Wider gaps call for a larger backer rod, and this 3/4" poly foam rod in a 15' length fills them so the caulk bead sits at the right depth. It presses in place to seal drafts and cracks, saves expensive caulk, and works with virtually every type of caulk and sealant.
Key Features:
- Reduces Caulk Needed -- Fills the depth of a wide gap so only a bead of sealant is required.
- 3/4" Diameter -- Sized for larger joints and gaps.
- 15' Length -- A generous roll for several joints.
- Moisture Repellent -- Foam resists moisture behind the sealant.
- Works With Any Sealant -- Compatible with virtually every type of caulk and sealant.
Where to Use:
- Wide joints -- Backing larger gaps before caulking.
- Draft sealing -- Pressing in place to block drafts and cracks.
- Insulating and cushioning -- Filling gaps where foam cushioning or insulation helps.