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 Producs
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: 1-1/8 in (28.66 mm)
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.