Closed-Cell Polyethylene Design: Includes 1 foam backer rod measuring 72 inches long, available in diameters of 2.5, 3, 4, and 5 inches. Durable, resilient closed-cell caulk saver foam with a water-resistant outer skin that helps resist punctures, moisture, and chemical exposure for long-lasting and reliable joint performance. This gap filler foam is highly flexible and easy to cut, yet highly resilient, ensuring an ideal fit in a wide range of spaces.
Ideal Depth Control for Sealants: This foam rod acts as a precise depth gauge, ensuring proper joint dimensions for optimal sealant adhesion and flexibility without requiring a separate bond breaker.
Compatible with Most Sealants: This backing rod works well with urethane, silicone, acrylic, butyl, polysulfide, latex, and chinking sealants, making it a versatile foam filler for gaps and multiple construction and sealing applications.
Wide Range of Applications: This wall crack filler is suitable for wood cracks, wall cracks, door or window joints, concrete expansion joint filler for sidewalks or driveways, glazing, curtain walls, isolation joints, and other common construction and sealing applications. Available in multiple diameters to accommodate medium to large gaps.
Superior Performance: This backer rod is chemically inert & stain-resistant, water-resistant, and able to withstand extreme temperatures from -90°F to 190°F, with >90% compression recovery for lasting shape retention in indoor and outdoor applications.
