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
SlabGasket XL Expansion Joint Replacement - 1 5/8 (2x4) - SG160
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.
Trim-A-Slab Concrete Expansion Joint Replacement 1-3/8 in. x 25 ft. Grey
Trim-A-Slab Expansion Joint Repair Material - 3/4 x 50 Linear feet (15.2m),Cement Grey
FAQ - Trim-A-Slab
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
Norm Abrams Tricks of the Trade IV - This Old House
Concrete Expansion Joint Repair & Replacement, Sidewalk Caulking, Slab Expansion Joint, Driveway Seam Filler/Sealer
2012 Comparison to other products
2012 Comparison to other products