As soon as your order ships, you will receive an email with your tracking information. We do not offer expedited shipping at this time. If you are requesting a special order, please contact Customer Service for a delivery time estimate. Showing 7 results for Caulking Backer Rod. Some caulking joints are larger than others and tricky to seal.
For these situations Paint Supply offers a wide selection of caulking backer rod in a variety of diameters and lengths, allowing you to seal larger joints with less caulk. Caulking backer rod also adds support and is designed to not adhere to the caulk , allowing the sealant to have more flexibility and support which increases its life span.
Fill large gaps around doors, windows and foundations with our selection of acrylic caulk , polymer and urethane sealants , elastomeric sealant , and silicone sealants. For more information, visit our product pages here. Blog Home Blog. Foam backer rod comes in several variations suited for specific projects.
What is a backer rod and what does it do? Reduce caulk consumption by controlling sealant depth— this prevents excessive use of caulking or sealant. Force adhesive into contact with the sides of the joint creating an hour-glass shape for a superior bond. Closed Cell Closed cell foam is distinct in that its cells are totally enclosed by its walls and not interconnecting with other cells.
Common Uses: Contraction and expansion joints of concrete highways Runways Driveways Parking Lots Open Cell Open cell backer rod is unique; it can easily compress and return to its original state due to unrestricted air movement. Common uses: Expansion and contraction joints Window glazing Curtain wall Construction partitions Precast assemblies and copings Parking decks Bridge construction Open cell backer rods may not be ideal for sealants that are susceptible to bubbling of air escaping the backer rod material.
Resistant to gas, oil and most solvents. Commonly used in roadways, runways and airplane hangers. Click here for Product Data Sheet. Open Cell Backer Rod is used for hot pour, where out-gassing and bubbling is a problem, or where quicker curing is needed it enables 2-sided air exposure on some products. Open Cell foam is enable air to reach both sides of joint. VERY soft and compressible. For Hot Pour applications, generally the joint is thicker and closer to size.
Small joints should have at least 3mm. Open-cell soft backer rod is highly compressive. It serves as a backing for caulking, sealants and all types of hot pour, chemical sealant and cold sealant products. It is yellow in color, odorless and chemically inert, made from Polyurethane. Open cell allows air to reach sealant from BOTH sides during cure, providing a bubble free, faster, more uniform cure. Open cell construction eliminates out-gassing and cold flow problems sometimes associated with certain materials.
Open cell backer rod can also be "saturated" with sealant and used to "carry" sealant to difficult-to-reach repair areas and to create underwater "plugs" normally it will not absorb sealant without "working it" in. Ideal for log-homes and tight-fitting, very shallow or V-shaped joints. Available in heights from 3" to 8". Used to create specification expansion joints in concrete slabs. Ideal for tight radius situations like swimming pools, round columns, etc.
Guides for Backer Rod Installation. When working on any expansion joint, backer rod is used together with the sealant. Including SL1, SL2 self-leveling sealants and with vertical grade sealants. Summmary: Pry out the old joint materials. Let dry as needed.
Vacuum edges should be clean and have a fresh surface. If edges are not clean, run a grinding disk or blade across them, then vacuum again. Set backer rod as noted. Do not apply sealant above the top plane of the concrete. Tires should not push down on it. Remove old joint materials. If you have old sealant in it, use one of these to remove: Cut Out Knives. Clean joints wire brush, then sweep, then vacuum. The joint or opening should be clean and dry and free of all contaminates, loose materials and free of water or frost.
If joint priming is needed on chalky or porous surfaces follow suggestions for joint-sealant application as directed by sealant manufacturer. Where necessary, primer should be applied only to the edges of the joint surface and allowed to dry before Backer-Rod is placed. Install Backer Rod: Lightly compress backer-rod into the joint. Install backer-rod using a blunt tool or a plain faced roller. It should form a seal againt edge of joint to prevent sealant from running out.
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