- 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
Sof® Rod
is an advanced sealant backing material that combines the features of open and closed cell backer rods in a single, high-performance product. This dual celled product will not out-gas when the skin is ruptured and prevent sealant bubbling and failure. It consists of a continuous length of extruded polyolefin foam with a non-absorbent outer skin and a resilient internal structure of both open and closed cells. CRL Sof® Rod is chemically inert and compatible with virtually all known cold-applied sealants, including self-leveling types.
is available for purchase in the following diameters – 3/8” to 2” (10 to 51 mm).
Temperature Limits
-45° to 160°F (-43° to 71°C)
Application
Backer Rod is commonly used for glazing, curtain wall construction partitions, parking decks, bridge construction, modular home gasketing, and log home chinking.
Size Selection
When choosing a CRL Sof® 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 25-50% 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
Do not tear, puncture, crease, over-compress, or stretch the Backer Rod during installation. Always select the correct size for the joint. Do not use with hot-pour sealants or hot melt adhesives where surface temperatures exceed 160°F (71°C).
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