Laying a patio starts with a level base, straight edges, and sand between the pavers
A patio is built in layers: soil preparation, a compacted gravel base, sand, the pavers themselves, and sand swept into the joints. The most common mistake is skipping or rushing the base—a patio that sits on uneven or loose ground will shift, crack, and develop puddles within a year. If you have a small patio (under 100 square feet) and the ground is already relatively flat, you can do this yourself with basic tools. Larger patios, sloped yards, or clay soil often need professional help because the base work determines whether the patio lasts 10 years or 20.
The entire process takes a weekend for a small patio if the base is already prepared, or two weekends if you are doing the base work yourself. You will need a level, a rubber mallet, a wheelbarrow, a plate compactor (which you can rent for $40 to $60 per day), and a straightedge to check your work as you go. The key is patience at each stage—rushing the compaction or sand leveling will cost you later when pavers start to shift.
Key Takeaways
- The base layer must be compacted gravel at least 4 inches deep, laid on level ground and tamped down firmly so it does not shift under the pavers.
- Sand goes on top of the gravel (1 to 2 inches), then pavers are laid in a pattern, then more sand is swept into the joints to lock them in place.
- You will need a level, a rubber mallet, a wheelbarrow, a plate compactor (which you can rent), and a straightedge to check your work as you go.
- Slope the patio slightly away from your house (about 1 inch per 8 feet) so water drains and does not pool against the foundation.
- If the ground is uneven by more than 2 inches or the soil is clay, hire a contractor to prepare the base—a bad base will cost more to fix later than it costs to do right the first time.
Measure, mark, and check the slope before you dig
Start by deciding where the patio edges will be and mark them with string or chalk. Measure the length and width so you know how many pavers to buy—add 10 percent for cuts and breakage. Check the slope: the patio should drop about 1 inch for every 8 feet of length, sloping away from your house. Use a level and a long straightedge (a 2×4 board works) to see how much the ground currently slopes. If it slopes toward your house or is very uneven, you will need to regrade the soil.
Walk the marked area and look for low spots, rocks, and roots. Remove any grass or sod with a shovel—you can compost it or haul it away. If the ground is very hard, water it the day before so it is easier to dig. Mark the depth you need to dig: if your pavers are 2 inches thick and you want 4 inches of gravel plus 1 inch of sand, you need to dig down 7 inches total. Mark this depth on a stake at each corner so you can check it as you work.
Dig and compact the base layer
Dig out the marked area to the depth you calculated. Use a shovel for small areas or rent a small excavator if the patio is large. Remove all loose soil and roots. The bottom should be firm—if you step on it and it sinks, you need to dig deeper and replace that soil with compacted gravel.
Spread gravel (crushed stone, not pea gravel) 4 inches deep across the entire area. Rent a plate compactor from a tool rental shop—this is a vibrating machine that weighs 200 pounds and compacts the gravel so it will not shift later. Run it over the gravel in overlapping passes until the surface is hard and does not move when you step on it. This step is not optional: a loose base is the reason most DIY patios fail. The compactor rental usually costs $40 to $60 per day, and you can return it the same day once you finish.
Lay sand and set up a screed board
Spread 1 to 2 inches of coarse sand (not fine play sand) evenly over the compacted gravel. A screed board is a straight piece of wood (usually a 2×4) that you drag across the sand to level it. Lay the screed board on top of the gravel at two points, then drag it toward you, letting it smooth and level the sand as it goes. Fill in low spots and drag again until the sand surface is flat and even.
Check your slope as you go: the sand should be slightly higher on the side closest to your house and slope down toward the far edge. Use a level on your straightedge to verify this. Once the sand is level and sloped correctly, do not walk on it—any footprints will create low spots where pavers will sink. If you need to cross the area, lay boards down to distribute your weight.
Lay the pavers in your chosen pattern
Start at one corner and lay pavers in your chosen pattern—running bond (like bricks), herringbone, or a straightforward grid are common choices. Lay each paver firmly on the sand, pressing down by hand or tapping it gently with a rubber mallet. Use a level on each paver to make sure it sits flat. If a paver is too high, tap it down; if it is too low, lift it out, add a pinch of sand underneath, and reset it.
Keep checking the overall slope as you work. Lay pavers in rows, working from one corner across and back, so you do not trap yourself in a corner. When you reach an edge, you will need to cut pavers to fit. Mark the cut line with a pencil, then use a wet saw (which you can rent) or a paver splitter (a hand tool that costs $20 to $40) to cut them. Wet saws are faster and cleaner but noisier; splitters are quieter and cheaper but require more muscle.
Fill the joints with sand and compact
Once all pavers are laid, spread dry sand over the entire patio and sweep it into the joints between pavers. Use a broom to push sand into every gap. Sweep off the excess sand from the paver surface. The sand locks the pavers together and prevents weeds from growing between them.
Run the plate compactor over the finished patio one more time at low speed. This settles the pavers and pushes sand deeper into the joints. After compacting, sweep more sand into any joints that have opened up. The patio should feel solid underfoot and not shift when you walk on it. If you see pavers that have settled unevenly, you can lift and reset individual ones without disturbing the rest.
Seal and maintain the patio
Let the patio sit for a week before sealing it. A paver sealer protects the stone from stains, moss, and weathering. You can explore it yourself with a roller or sprayer—follow the product instructions for drying time and reapplication. Sealer is optional but extends the life of the patio, especially if you have clay pavers or live in a wet climate.
Sweep the patio regularly to remove leaves and debris. Weeds may grow in the joints over time; pull them by hand or spray with a herbicide made for patios. Every few years, sweep more sand into the joints if they have settled. If pavers crack or shift, you can remove and reset individual pavers without disturbing the rest of the patio.
When to call a professional
If your yard slopes more than 2 inches across the patio area, if the soil is clay or very wet, or if the patio is larger than 200 square feet, hire a contractor to at least prepare the base. A bad base will cause the patio to fail within a few years, and fixing it means removing all the pavers and starting over—much more expensive than doing it right the first time.
You should also call a professional if you need to install drainage, build a retaining wall, or connect the patio to an existing structure like a deck or house. These jobs require planning and permits that are beyond a basic DIY project. A contractor can also handle difficult soil conditions or unusual slopes that would be risky to tackle without experience.
Frequently Asked Questions
How long does it take to lay a patio?
A small patio (100 to 150 square feet) takes a weekend if the base is already prepared. If you are doing the base work yourself, add another weekend. Larger patios or complex patterns take longer. Drying and sealing add a week before the patio is fully ready to use.
What kind of sand should I use?
Use coarse sand (also called concrete sand or mason sand), not fine play sand. Fine sand compacts too tightly and can trap water. Coarse sand drains better and holds pavers in place without becoming rock-hard.
Can I lay a patio on top of grass without digging?
No. Grass will decompose under the patio, creating voids that cause pavers to sink and crack. You must remove the grass and sod, then prepare the base properly. Skipping this step is the most common reason DIY patios fail.
Do I need to use a plate compactor?
Yes, for the gravel base. You can rent one for $40 to $60 per day. Tamping by hand is not effective enough—the gravel will shift under the weight of the pavers and people walking on them. For the final compaction after laying pavers, you can skip it if the patio is very small, but it significantly improves durability.
What should I do if pavers are sinking or cracking after a year?
This usually means the base was not compacted properly or the ground underneath is shifting. You can remove the affected pavers, add more sand or gravel underneath, and reset them. If the problem is widespread, the base may need to be redone by a professional.