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Yes, interlocking pavers need sand both as a base and as a finishing touch to fill any gaps. Sand helps keep your pavers in place to avoid shifting, especially for areas with high foot or vehicle traffic. It also helps prevent water buildup by providing a channel for water drainage.

If you wish to break up a cracked or broken paver for removal, you can use a hammer or mallet and a chisel to fragment the paver. As you’re working, be careful not to disturb surrounding pavers; the key is to work slowly and steadily and remove the broken pieces gently. You should also wear a mask and goggles to ensure that no dust gets into your eyes, nose, or mouth as you work.

Not all pavers need sealing, but they do provide an added layer of protection and durability. If pavers are not sealed (or sealed properly) they’re more likely to stain, fade, and show signs of weathering. All of these issue could result in weaker pavers and the need to replace them sooner.

Interlocking pavers can last 50 years or more, but you’ll need to keep up with some basic routine maintenance to get the most out of them. This includes regularly applying a sealant and keeping up with any weeds that start to grow within them. Avoid metal shovels in the winter, and only salt the pavers ahead of snow and ice if the pavers are part of a necessary walking path—salt and other chemical-based de-icers can take a toll on your pavers over time.