CRL B0CBR58C Black 5/8" Open Cell Backer Rod - 100 ft Roll

C.R. Laurence B0CBR58C Black 5/8" Open Cell Backer Rod - 100 Foot Roll is an essential component for ensuring optimal sealant performance in various construction applications. This soft, round backer rod is made from open cell polyurethane foam, offering exceptional compressibility and adaptability to dynamic joint movements. Its design eliminates the risk of sealant failure due to outgassing, a common issue with closed cell backer rods. Measuring 5/8 inches in diameter and available in a 100-foot roll, the B0CBR58C backer rod is perfect for vertical and horizontal wall joints, although it should not be used in horizontal traffic joints. Its black color effectively disguises the rod in joint applications, maintaining aesthetic appeal without compromising performance. This backer rod is compatible with all cold-applied sealants, including high-performance silicones and urethanes. Proper installation is crucial; the rod must be oversized by 50% to create a tight fit and serve as a bond breaker. By controlling the depth of the sealant bead, it helps achieve the ideal hourglass shape for maximum sealant longevity. To ensure the best results, joints should be thoroughly cleaned before installation. For a smooth application, consider using the CRL Backer Rod Insert Tool Set, specifically designed for this purpose.

5/8" Open Cell Backer Rod - 100 Foot Roll

• Controls Sealant Depth and Functions as an Effective Bond Breaker
• Compatible with All Cold-Applied and Hot-Pour Sealants
• Soft Material Allows for Easy Compression During Installation

CRL Open Cell Backer Rod is a soft, round, and highly compressible polyurethane foam designed to back cold-applied sealant joints, or hot-pour sealants. Its open-cell structure allows it to flex and adapt to irregular or damaged joints without being affected by dynamic joint movement or stress.

CRL Open Cell Backer Rod is available for purchase in the following diameters – 5/8" to 2" (16 to 51 mm).

• New Joints: Clean thoroughly to remove form-release agents, curing compounds, or debris. Ensure the joint is clean and dry before applying sealant.
• Repairing Old Joints: Remove all old sealant or filler. Use wire brushing and air blasting for effective cleaning. If using an air compressor, ensure it has moisture and oil traps.

1. Prepare the surface by following the Joint Preparation directions.
2. Measure and Select: Choose the correct backer rod size based on the joint width.
3. Set Depth: Install the backer rod at the depth recommended by the sealant manufacturer, ensuring the sealant forms an "hourglass" shape.
4. Use the Right Tools: Install with a blunt tool or roller. The Cat. No. T607CU605 or Cat. No. SBRR for smooth installation.

Resources

• Safety Data Sheets B0CBR58C.pdf
• Specifications 0cbr.pdf