What You Need to Know Before You Start
Paver installation begins with a level base, not with laying the pavers themselves. The ground underneath determines whether your patio stays flat or develops low spots that collect water. Most patios fail because the base was rushed—not because the pavers were laid wrong. You will dig out 4 to 6 inches of soil, compact it firmly, add a layer of gravel, compact again, then add sand, and only then place the pavers on top.
The whole job takes a weekend for a small patio (8 by 10 feet) if you work alone, or a day if you have a helper. You will need a shovel, a wheelbarrow, a hand tamper or plate compactor (you can rent these), a level, a rubber mallet, a tape measure, and a circular saw with a masonry blade if you need to cut pavers. The cost of tools you do not already own usually runs $50 to $150 if you rent the compactor.
Key Takeaways
- Dig out 4 to 6 inches of soil, compact it, add 2 to 3 inches of gravel, compact again, then add 1 inch of sand before laying any pavers.
- Check that the base is level or slopes very slightly away from your house so water drains outward, not toward the foundation.
- Lay pavers in your chosen pattern, tapping each one down with a rubber mallet so it sits firmly in the sand without rocking.
- Sweep sand into the joints between pavers after the entire patio is laid, then water it down so the sand settles and locks the pavers in place.
- A patio that settles unevenly or collects standing water usually means the base was not compacted enough or the slope was wrong.
Marking Out Your Patio and Removing the Soil
Mark the edges of your patio with string and stakes so you know exactly where to dig. Stretch the string tight and drive stakes at the corners, then check that the corners are square by measuring diagonally from corner to corner—both diagonals should be the same length. This takes five minutes and saves you from digging a crooked hole.
Dig out all the soil inside the marked area to a depth of 4 to 6 inches. The depth depends on your climate: colder areas with frost need the full 6 inches so the base can expand and contract without cracking the pavers. Warmer areas can use 4 inches. Remove all roots, rocks, and debris as you go. Pile the soil outside the marked area—you will not need it again.
Once the hole is dug, check that the bottom is reasonably level. You do not need it perfectly flat at this stage, but large holes or high spots should be filled or leveled out. Tamp down the bare soil with your hand tamper or compactor, working in overlapping passes until the soil is firm and does not shift when you step on it.
Adding and Compacting the Gravel Base
Spread 2 to 3 inches of gravel (crushed stone, not river rock) evenly across the compacted soil. Gravel provides drainage so water does not pool under your pavers and cause them to settle unevenly. Rake it smooth, then compact it thoroughly with your tamper or compactor. This is the step most people skip or rush, and it is the reason most patios fail. Spend at least five minutes compacting the gravel until it is hard and does not shift.
Check the height of the gravel with a measuring tape or a stick marked at 2 to 3 inches. If some areas are thinner, add more gravel and compact again. The gravel layer should be consistent across the entire patio so the sand layer on top sits at the same height everywhere.
Creating the Sand Base and Checking Your Slope
Spread 1 inch of coarse sand (not fine play sand) evenly over the compacted gravel. Coarse sand locks the pavers in place better than fine sand, which shifts and settles too easily. Rake it smooth and level, then use a long straight board (a 2-by-4 works well) laid across the patio to check that the sand is even. Place your level on top of the board and adjust the sand until the board is level or slopes very slightly away from your house—about 1/8 inch of drop per foot of distance.
This slight slope is critical: it lets water run off the patio instead of pooling in the middle or against your house. If your patio is 10 feet wide, the far edge should be about 1.25 inches lower than the edge closest to your house. Use your level to check this slope as you work. Do not compact the sand—leave it loose so the pavers can settle into it as you tap them down.
Laying the Pavers in Your Chosen Pattern
Start at one corner and lay pavers in your chosen pattern. Common patterns are running bond (like bricks), herringbone, or a straightforward grid. Lay the first paver, then the next one beside it, leaving a consistent gap between them—usually 1/8 inch to 1/4 inch, depending on the paver size and the look you want. Tap each paver down with a rubber mallet so it sits firmly in the sand without rocking.
Check frequently with your level to make sure the pavers are not tilting or settling unevenly. If a paver sits too high, tap it down more. If it sits too low, lift it out, add a pinch of sand underneath, and tap it down again. Work in rows across the patio, checking the level every few pavers. This is slow work, but it is where the quality of your finished patio is decided.
If you need to cut a paver to fit an edge, mark the cut line with a pencil, then use a circular saw with a masonry blade to cut it. Wear a dust mask and eye protection—masonry dust is harmful to breathe. Cut pavers on the ground outside the patio area, not on top of your finished work.
Filling the Joints and Locking the Pavers in Place
Once all the pavers are laid, sweep coarse sand into the joints between them. Use a broom to push the sand into every gap, working diagonally across the patio so the sand fills the joints rather than just sitting on top. Sweep back and forth until the joints are full and the sand is level with the top of the pavers.
Water the entire patio with a garden hose on a gentle setting. The water causes the sand to settle and compact, locking the pavers together. After the water drains, sweep more sand into any joints that have settled below the surface of the pavers. Water again and let it dry. You may need to do this two or three times before the joints are completely full and settled.
Do not use the patio for at least 24 hours after you finish. The sand needs time to dry and set. After a few weeks, you may notice that some joints have settled slightly—sweep in a little more sand if needed. This is normal and does not mean your patio was installed wrong.
Common Mistakes and How to Avoid Them
The most common mistake is not compacting the base enough. A base that looks solid when you tap it with a hand tamper may still shift under the weight of foot traffic. If you are installing more than 100 square feet, rent a plate compactor—it costs $40 to $60 for a day and does the job much faster and better than a hand tamper. Compact the soil, then the gravel, then check both layers with your level before you add the sand.
The second mistake is using fine sand instead of coarse sand. Fine sand shifts and settles unevenly, causing pavers to rock and joints to open up. Buy coarse sand (sometimes called concrete sand or masonry sand) from a landscape supply yard, not play sand from a hardware store.
The third mistake is not sloping the patio away from the house. Water that pools on your patio will eventually seep under the pavers and soften the base, causing the patio to settle unevenly. Check your slope with a level on a straight board as you work, and adjust the sand if needed.
Frequently Asked Questions
Can I install pavers on top of existing concrete?
Yes, but the concrete must be clean, level, and not cracked. Sweep it thoroughly, then lay pavers directly on the concrete using a thin layer of sand or polymeric sand. This method is faster than removing the concrete, but the pavers may shift more easily because there is no gravel base underneath to absorb movement.
What if I hit a rock or root while digging?
Remove it and keep digging. Rocks and roots prevent the base from compacting evenly. If you hit a large rock that is difficult to remove, dig around it and remove the soil underneath so the rock does not create a high spot in your base.
How much sand do I need?
For a 100-square-foot patio with 1 inch of sand, you need about 3 cubic yards of sand. Most landscape supply yards can tell you how much you need if you give them the dimensions of your patio. Order a little extra—you will use some filling the joints.
Do I need to seal the pavers after installation?
Sealing is optional and depends on the type of paver and your climate. Concrete pavers benefit from sealing because it prevents staining and fading. Natural stone pavers like flagstone or slate may darken when sealed. Check the manufacturer's instructions for your specific pavers.
What should I do if a paver cracks or breaks?
Remove the broken paver by lifting it out carefully, sweep out the old sand, and lay a new paver in its place. Tap it down so it is level with the surrounding pavers, then sweep sand into the joints. This repair can be done anytime and takes only a few minutes.