Get matched with top pavers and hardscaping pros in Calexico, CA

If you’re installing pavers over an existing concrete slab, you don’t need to affix the majority of the pavers, but you should use a polyurethane-based adhesive on the border pavers. Polyurethane will expand and contract with temperature changes, which will help keep the pavers firmly in place throughout the year. It’s also strong enough to stand up to foot traffic. You’ll use polymeric sand between the non-border pavers to keep them in place and prevent shifting.

Deciding between concrete, stone, or brick pavers comes down to your budget and the ease of installation. Concrete is the least expensive material, followed by brick and then natural stone. Concrete pavers are also the easiest to install, but bricks are relatively easy as well. Stone pavers require more time and labor because their natural shapes make them harder to fit together. Professional stoneworkers, however, are able to shape them as needed.

Professional installers often include a deep layer of crushed gravel under permeable pavers to allow more runoff to soak through into the soil below. Many installations will include multiple layers of gravel, with coarser aggregate at the base and finer aggregate that sits on top of that bottom layer. Above the gravel, you’ll often find coarse sand that helps reduce paver shifting over time. Some permeable paver designs include a water collection system set into the gravel layer to route runoff to a safe area for disposal.

Gravel is crucial to your paver patio’s drainage, meaning it plays a massive role in the lifetime of your patio. Gravel holds the pavers in place and allows water to move away from your patio to prevent erosion or stone damage. 

Without gravel, your paver patio will need replacing much sooner, and in the meantime, water damage and potential weed growth will cause you a lot of headaches.