CRL B0CBR78C Black 7/8" Open Cell Backer Rod - 100 ft Roll

C.R. Laurence B0CBR78C Black 7/8" Open Cell Backer Rod - 100 Foot Roll is an essential component for achieving optimal sealant performance in construction and renovation projects. This open cell, non-gassing rod is compatible with all cold-applied sealants, making it a versatile choice for various applications. Its soft, compressible nature allows it to easily adapt to joint variations, effectively controlling the depth of sealant while acting as a bond breaker to prevent unwanted adhesion. Designed for use in vertical and horizontal wall joints, this backer rod can withstand temperatures ranging from -65°F to 400°F (-54°C to 204°C). The black color not only enhances aesthetic appeal by blending seamlessly into joints but also helps eliminate potential sealant failures caused by outgassing. Proper installation is crucial; the rod should be oversized by 50% to ensure a snug fit, allowing for an hourglass shape that promotes sealant longevity. Before installation, it is important to thoroughly clean the joints, removing any debris or old sealant to ensure a strong bond. C.R. Laurence's backer rod is packaged on easy-to-unroll spools, facilitating a smooth installation process. Ideal for building professionals and knowledgeable homeowners, this product guarantees reliable results in your sealing applications.

7/8" 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 B0CBR78C.pdf
• Specifications 0cbr.pdf