Product Details:
Open Cell, No Skin, Non-Gassing Rod is Compatible with All
Cold-Applied Sealants
Controls Depth of Sealant and Acts as a Bond Breaker
Soft - Compresses Easily Comparable to Denver or Taylor Foam
Products
CRL Open Cell Backer Rod is a soft, round, and
easily compressible open cell polyurethane foam. Open Cell Backer
Rod is not adversely affected by dynamic joint movement, and its
inherent flexibility applies itself to joint variations very
easily. It is ideal for use in situations where joint damage has
occurred. It eliminates potential sealant failures due to out
gassing that occurs when the "skin" of closed cell backer
rod is punctured. The black color helps to disguise the backer rod
in certain joint applications. CRL Open Cell Backer Rod can be used
in temperatures from -65° to 400°F(-54° to 204°C). It is highly
recommended for use with high performance sealants such as
silicones and urethanes. CRL Open Cell Backer Rod should be used
only in vertical and horizontal wall joints. It is not suitable for
horizontal traffic joint surfaces like pavement joints.
Color: Black
Diameter of Rod: 5/8 in (15.9mm)
Feet per Roll: 100 ft (30.5 m)
Additional Product Information:
Proper size selection of CRL Open Cell Backer Rod is important as
it controls the depth of the sealant bead. It must be oversized
(50%) to fit tightly into the joint, and function as a bondbreaker
to prevent bottom-side adhesion of the sealant.
New joints must be cleaned thoroughly, removing any concrete
form-release agents, curing compound residue, or any other foreign
materials. To ensure a good sealant bond, joints must be clean and
dry when the sealant is installed. If old joints are being
repaired, all old sealant or filler must be removed. Wire brushing
and air blasting are very effective in removing old caulk residues.
If an air compressor is used, it must be equipped with traps for
the removal of oil and moisture.
After measuring the joint size and choosing the applicable backer
rod, install the backer rod at the depth recommended by the sealant
manufacturer. The depth that the rod is inserted into the joint
should allow the sealant to form a "hour glass" shape.
This is the optimum shape factor for prolonging the service life of
the sealant. The backer rod must be installed with a blunt tool or
roller. The T607CU605 CRL Backer Rod Insert Tool Set, is designed
specifically for the smooth installation of backer rod. Packaged on
easy to unroll spools and shipped in boxes not bags.