CRL EF12C 1/2" Closed Cell Backer Rod - 100 ft RollC.R. Laurence EF12C 1/2" Closed Cell Backer Rod - 100' Roll is designed for precision and efficiency in sealant applications. This flexible, round polyethylene foam serves as a vital backing and thickness control device for elastomeric and other cold-applied sealants. With its unique closed cell structure, it effectively prevents excessive sealant use by limiting the sealant depth, ensuring optimal joint design. Compatible with all cold-applied sealants, the EF12C Backer Rod features a non-adhesive exterior that allows it to stretch and recover with joint movement without stressing the adhesive points. Its design promotes the preferred "hourglass" shape for joint sealants, making it ideal for various applications, including curtain walls, precast panels, and door and window frame perimeters. This backer rod withstands a wide range of temperatures, from -45°F to 160°F, and is chemically inert, resisting oils, solvents, and gasoline. It will not stain or bleed into sealant materials, ensuring clean finishes. For best results, choose a rod approximately 25% wider than the joint and install it with a blunt tool or roller, such as the CRL SBRR Backer Rod Roller. Available in different shades of black, the color does not affect performance.
1/2" Closed Cell Backer Rod - 100 Foot Roll
- Easy Control of Sealant Application Thickness
- Non-Bonding Surface – No Additional Bond Breaker Required
- Compatible with All Cold-Applied Sealants
CRL Closed Cell Backer Rod is a round, flexible polyethylene foam with an exterior "skin" designed to control sealant depth and promote proper joint design. The backer rod serves as a backing material for elastomeric and other cold-applied sealants preventing excessive use of the sealant. The backer rod’s non-bonding surface prevents sealants from sticking and allows the sealant to move and flex reducing stress at adhesion points improving sealant performance.
CRL Closed Cell Backer Rod is available for purchase in the following diameters - 1/4" to 2" (7 to 50mm)
CRL Closed Cell Backer Rod will not absorb water or wick water to joint walls, which could cause adhesive failure. It is compatible with cold-applied sealants, and its round shape promotes the preferred "hourglass" shape for joint sealants.
Temperature Limits:
-45°F to 160°F (-43°C to 71°C)
Application:
Backer Rod is commonly used in expansion/control joints with cold-applied sealants. Typical applications include curtain walls, construction partitions, precast panels, parking decks, door and window frames, coping, floor and deck joints, horizontal traffic joints, and building rehab projects.
Size Selection:
When choosing a CRL Closed 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 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:
- 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.
Installation Instructions:
- 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.
THE PRODUCT CAN COME IN DIFFERENT SHADES / TONES, BUT THIS DOES NOT AFFECT THE OVERALL PERFORMANCE OF THE PRODUCT.
Product Warning:
Do not tear, puncture, crease, over compress or stretch during insertion. Always use the correct size Backer Rod for the particular application. Refer to the size selection chart. Do not use with hot-applied sealants or hot melt adhesives where their surface temperature is over 160ºF (71ºC).
Most shipping weights are approximate and have not been verified. If the exact weight is needed in order to determine shipping costs, and shipping costs are required in order for you to complete your order, please request this prior to submitting your order by contacting CRL Customer Service. Product images shown are of the actual product or a close representation. Colors can vary depending on your computer's video card and on how your monitor's color is adjusted.
Attributes
Compliance and Restrictions: Warning Reproductive Harm - www.p65warnings.ca.gov
Finish/ Color:: Gray
Rod Diameter: 1/2 in. (13 mm)
Roll Length: 100 ft.(30 m)
Shipping Limitations: None
Type: Closed Cell
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