Can You Lay Pavers Over Uneven Concrete? A Comprehensive Guide

When you have uneven concrete or an imperfect surface, you might wonder if laying pavers is still possible. The short answer is yes, but it involves careful preparation to ensure a stable and aesthetically pleasing finish. Here’s a step-by-step guide on how to do it.

Preparation and Materials Required

Before laying pavers over uneven concrete, it’s crucial to gather the necessary materials. You will need:

Coarse sand or very fine gravel Pavers of your desired type and color A tamper or vibrating tool A heavy steel garden roller (optional) A broom or leaf blower Water, if needed

Step-by-Step Guide

Step 1: Prepare the Surface

Begin by covering the entire area of the concrete that will receive the pavers with coarse sand or very fine gravel. The purpose of this layer is to fill in all voids and create a solid base for the pavers to sit on.

Step 2: Level the Sand and Gravel

Once the sand or gravel is spread evenly over the concrete, use a screed or shovel to level the surface. Make sure the sand or gravel is flat and evenly distributed. This will ensure that your pavers are level once laid.

Step 3: Lay the Pavers

Start laying the pavers in your desired pattern, gently placing them on the sand or gravel. Leave a small but consistent gap around each paver, about 1/8 inch. This gap allows for movement and prevents pavers from cracking due to settled concrete or ground movement.

Step 4: Fill the Joints

Once all pavers are in place, spread sand or gravel into the gaps between them using a rake or a garden comb. Use a broom to sweep off the excess, ensuring that the joints are filled and the pavers are stable.

Step 5: Compact the Pavers

To embed the pavers into the sand or gravel, rent or borrow a heavy steel garden roller and roll over them several times. This process helps to settle the pavers and distribute the sand evenly, ensuring a uniform surface.

Step 6: Final Touches

Check for any new voids and fill them with additional sand or gravel. If any pavers are uneven, level them with the desired flat top surface. You may need to roll over the pavers again if there is some settling.

Why It's Important to Follow These Steps

Following these steps is essential for a successful project. By providing a stable base, carefully leveling the surface, and ensuring proper joint filling, you create a strong and enduring hardscape feature.

The key to success lies in the preparation and attention to detail. Taking the time to ensure each step is done correctly will result in a beautiful and durable walkway, patio, or pathway for your outdoor space.

Don’t hesitate to call in a professional if you’re unsure or if the surface is particularly challenging. With the right preparation and a little patience, laying pavers over uneven concrete can be a simple and rewarding DIY project.