Nicosia Backyard Design on Instagram: "Some homeowners question why we put concrete under pool deck pavers. Here's exactly why. You see how this has settled? Look all the way around—the pavers are shifting because there's no proper foundation beneath them. When you put steel reinforcing bars every 4 feet, you don't get that settlement. And even if minor settling occurs, you don't have a problem with the pavers. Now look at this coping. Whoever did this work only put 6 inches of concrete under it