![]() Old sealant and worn-out felt need to be removed. If you look at the expansion joints between your concrete you might see black felt or old sealant. Without a concrete expansion joint, your sidewalk or driveway would crack. ![]() Like I said in the intro these joints allow concrete pads to expand and contract during freeze-thaw cycles. So let’s get started and seal your concrete expansion joint so it’s protected from the effects of weather! Removing Old Material from a Concrete Expansion JointĬoncrete expansion joints are also known as isolation joints. This supply list may sound intimidating because of the angle grinder.īut what better time to begin using one of these awesome tools, and they can be very affordable.
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