- 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
- 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.
- Prepare the surface by following the Joint Preparation directions.
- Measure and Select: Choose the correct backer rod size based on the joint width.
- Set Depth: Install the backer rod at the depth recommended by the sealant manufacturer, ensuring the sealant forms an "hourglass" shape.
- Use the Right Tools: Install with a blunt tool or roller. The Cat. No. T607CU605 or Cat. No. SBRR for smooth 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.
is available for purchase in the following diameters – 5/8” to 2” (16 to 51 mm).
Unlike closed-cell rods, it eliminates the risk of outgassing when punctured, making it ideal for high-performance sealants like silicones and urethanes.
Temperature Limits
-60° to +500°F (-15° to +260°C)
Application
Best used in vertical and horizontal wall joints. Not recommended for horizontal traffic surfaces such as pavement joints.
Size Selection
When choosing a CRL Open Cell Backer Rod, it is important for proper size selection as it controls the depth of the sealant bead and acts as a bond breaker to prevent back-side adhesion. It must be oversized approximately 50% wider than the joint to ensure a tight fit.
Storage
Store in a well-ventilated are. Do not store products in direct sunlight. Keep away from heat sources and open flames.
Joint Preparation
Installation Instructions
THE PRODUCT CAN COME IN DIFFERENT SHADES / TONES, BUT THIS WILL NOT AFFECT THE OVERALL PERFORMANCE OF THE PRODUCT.
Product Warning
Not suitable for horizontal traffic joints—use only in vertical wall joints. Do not use with hot-applied sealants.
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