There are some sidewalks and driveways that have wooden expansion joints. These exist solely to help the concrete expand and contract without cracking. However, wooden expansion joints aren’t very durable. With time, they will rot
Trim-A-Slab 1-3/8 in. Wide x 34 in. Dia Roll x 25 ft. long Concrete Expansion Joint Replacement in Grey 3059 - The Home Depot
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SlabGasket is designed to easily replace rotten wood expansion joints SlabGasket XL is designed to easily replace larger rotten (2x4) wood expansion
SlabGasket Expansion Joint Replacement (+ XL Sizes) - Free Sample Pack
Trim-A-Slab is a product made from exterior-grade materials designed to replace rotten or missing wood often found in driveways and sidewalks over 5 years old. It offers many advantages over the tube-dispensed gooey stuff that has been about the only option available for years. Trim-A-Slab installs incredibly fast, looks great, and can be removed and replaced in case you need to run wires for outdoor lighting across your driveway.
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