Frost King C22h Caulk Saver Backer Rod, 1/2 In. X 20 Ft., Gray

The Frost King C22H Caulk Saver is a polyfoam backer rod designed to reduce the amount of caulk needed when filling large gaps and cracks. This durable foam insert is placed into gaps before caulking, creating a backing surface for the caulk to bond to while significantly reducing the volume of expensive sealant required. Also called caulk backer rod, it works with virtually every type of caulk and sealant.

The polyfoam construction is moisture-repellent and resilient, maintaining its shape and performance over time. Press the rod into place along the gap, then apply caulk over it for a clean, lasting seal. This method saves money by reducing caulk consumption while filling large gaps effectively. The standard 1/2-inch width offers flexibility across various gap sizes and can be used in expansion joints to help prevent moisture intrusion and accommodate movement.

Features and Benefits

• Reduces Caulk Usage: Fills the depth of large gaps so you use significantly less expensive caulk to complete the job.
• Works with All Caulk Types: Compatible with virtually every type of caulk and sealant for flexible application across different projects.
• Moisture-Repellent Polyfoam: Durable, resilient material resists moisture absorption and maintains its shape through seasonal movement.
• Expansion Joint Use: Ideal for expansion joints where preventing moisture intrusion and accommodating movement are important.
• Standard 1/2-Inch Width: Offers flexibility for use across various gap sizes.

Specifications

• Brand: Frost King
• Model: C22H
• Diameter: 1/2 inch
• Length: 20 feet
• Material: Polyfoam
• Color: Gray