How to Repair Loose or Sunken Stone Pavers

Paving stones eventually lose their tight fit due to shifting soil, water erosion, or simple heavy traffic. A sunken paver isn't just an eyesore; it's a genuine trip hazard and a low point where rainwater will gather, undermining the stability of the entire path. Fixing it correctly means addressing what lies underneath the surface rather than just leveling the stone itself. Done well, a paver repair is invisible. You are essentially resetting the stage for the stone, ensuring the base is compacted and even so the surface sits flush. This is the difference between a permanent repair and one that will settle again after the first heavy rain.

  1. Clear joints and access. Remove any sand or debris from the joints around the sunken stones using a flathead screwdriver or a stiff wire brush. If the pavers are tight, carefully pry up one paver using a thin masonry trowel or a specialized paver puller to create an opening.
  2. Extract and scrub stones. Pull up the sunken pavers and set them aside in the order you removed them. Use a wire brush to clean the sides of the stones, removing hardened sand or moss so they fit cleanly back together later.
  3. Dig to solid ground. Scoop out the old bedding sand down to the compacted base layer. If the base aggregate itself has sunk, add a small amount of crushed stone or gravel to build the level back up.
  4. Screed sand flat. Add a fresh layer of coarse bedding sand to the cavity. Use a straight-edged board to screed the sand level, ensuring it sits about one-quarter inch higher than the surrounding base to account for the settling of the stone.
  5. Set stones flush. Place the pavers back into the opening, starting from the outside and working toward the center. Tap them down firmly with a rubber mallet until they are perfectly flush with the surrounding surface.
  6. Lock joints with sand. Sweep dry joint sand or polymeric sand over the area, working it deep into the gaps between the stones with a push broom. If using polymeric sand, lightly mist it with water to activate the binding agents.