【Concrete Crack Filler with Different Sizes】Our foam rope is made of high quality foam in round shape, with the features of good consistency, durable and sturdy. For water and temperature resistant, the baker rod has ensured long-lasting performance. This flexible and soft foam gap filler will fill cracks adequately and tightly. This concrete filler foam rod is soft enough to compress, but firm enough to make a seal. 【Low Cost and Dependable Backer Rod】 Our foam baker rod is a low cost way for you to fix gaps and joints. The concrete crack filler caulk foam can be used to fill large gaps and openings to prevent drafts and can be used when the old caulk was badly cracking. It is a very useful tools in your house, not only for gaps and joints. You can use it everywhere you like in your house and neighborhood. 【More Choices for Your Need】You could choose the size and length of concrete joint filler according to your requirements. The backer filler rope size can be customized for various uses with scissors or blades. It is a sufficient length for daily use and replacement. And the foam gap filler is great for joints between asphalt and concrete or to fill cracks in asphalt or concrete. 【Effortless to Install】Our foam baker rod fits well in cracks. Easy to push into areas and easy to cut. You can easily get the desired length and put it into the gap, and you can twist multiple strands of cord together for extra large gaps. First, you should clean the area and insert the backer rod firmly and uniformly into the joint or gap. And then apply suitable sealant fully over the backer rod and smooth it with a tool for a uniform finish. 【Versatile to Use】Our foam rods help you saving a lot of filler material and works for most kinds of cracks, such as expansion joints in driveway and sidewalks, wood cracks, wall cracks, door and window joints, pavement joints, also can be used to seal windows during cold weather, post dog's ears up, make ring holders, and hand craft projects. Foam Backer Rod for Gaps Concrete Crack Filler Joints Foam Gap Filler Caulk Saver Backing Rod Concrete Filler Rope Concrete Joint Filler