Fix Uneven Patio Pavers

Pavers settle. Water washes sand away beneath them, tree roots push them up, and the ground shifts with freeze-thaw cycles. What starts as a minor wobble becomes a tripping hazard, and water begins pooling in the low spots instead of draining away. Fixing uneven pavers isn't about tearing out the whole patio—it's about resetting the problem areas to match the grade of the surrounding surface. The work goes faster than most people expect. You're not re-laying the entire patio, just correcting the spots that have moved. With the right base material and proper compaction, those pavers will stay put for years. The key is adding or removing sand in controlled amounts and getting the compaction right so you don't create new low spots six months later.

1. Spot the Settlement. Walk the patio and mark every uneven paver with chalk or a piece of tape. Use a four-foot level to check the overall slope—patios should pitch away from the house at roughly 1/4 inch per foot. This tells you whether pavers need to go up or down relative to their neighbors.
2. Pry Carefully, Damage Rarely. Pry up the uneven pavers using two flat pry bars or a pair of sturdy screwdrivers. Work from the edges and lift evenly to avoid cracking them. Stack the pavers nearby in the order you removed them—if they have a pattern, you'll want to replace them the same way.
3. Get the Grain Right. Check the sand layer beneath the pavers. If it's compacted hard and the paver was high, scrape away sand until the cavity is about 1 inch deeper than the paver thickness. If the paver was low, add new leveling sand and rake it smooth. You want roughly 1 inch of sand under each paver after compaction.
4. Strike True with Rails. Lay two pieces of 1-inch PVC pipe or wooden screed rails on either side of the cavity, resting on the surrounding pavers. Drag a straight board across the pipes to level the sand. The sand should sit 1 inch below the top of the adjacent pavers. Remove the pipes and fill the voids they leave with sand.
5. Settle Pavers Flush. Place each paver back into position, setting it straight down without sliding it. Tap it gently with a rubber mallet to seat it into the sand. Use your level to check that it matches the height and slope of the surrounding pavers. Make small adjustments by lifting the paver and adding or removing pinches of sand beneath it.
6. Lock In, Stay Strong. Once all pavers are level, place a wooden block over each one and strike it firmly with a hand sledge or heavy mallet. This compacts the sand base and locks the paver in place. Work from the center of the repair outward toward the edges to avoid creating gaps.
7. Pack Joints Full. Sweep polymeric sand across the pavers, pushing it into all the joints with a push broom. Make multiple passes until the joints are full to the top. Brush off excess sand from the paver surfaces—any sand left on top will harden into a haze when activated.
8. Mist Gently, Harden Fast. Mist the entire repaired area with a fine spray from a garden hose. The polymeric sand will activate and begin to harden. Keep the spray gentle—too much pressure will wash the sand out of the joints. Let it cure for 24 hours before allowing foot traffic and 48 hours before heavy use.