What you need to know before you start

A paver patio is built in layers: soil preparation, a gravel base, sand, and then the pavers themselves, locked together by sand between the joints. The work is physical but straightforward—you do not need special tools or experience. Most homeowners can complete a small patio (8 by 10 feet) in a weekend, though larger projects take longer. The hardest part is usually the digging and base preparation, not the paver layout itself.

The real difference between a patio that lasts ten years and one that lasts twenty is how well you prepare the ground underneath. Pavers will shift and sink if the base is not compacted properly, and water that pools on the surface will crack them in freeze-thaw cycles. This guide walks you through each layer so you understand why you are doing it, not just what to do.

Key Takeaways

  • Dig out the patio area to a depth of 4 to 6 inches, remove all grass and roots, and compact the soil firmly before adding any base material.
  • Lay 2 to 3 inches of gravel (crushed stone, not pea gravel), then 1 inch of sand, and compact both layers so pavers sit level and stable.
  • Set pavers in a pattern you choose—running bond, herringbone, and straightforward grid are the most common—and tap each one level with a rubber mallet.
  • Fill the joints between pavers with polymeric sand, which hardens when wet and locks the pavers in place so they do not shift.
  • Rent a plate compactor from a home center for the base layers; it costs $40 to $80 per day and saves your back and ensures the foundation is solid.

Measure the area and mark the edges

Start by measuring the length and width of where your patio will go. Mark the corners with wooden stakes and run string between them so you can see the exact footprint. Check that the corners are square by measuring diagonally from corner to corner—both diagonals should be the same length. If they are not, adjust the stakes until they match.

Decide on a slope for drainage. Pavers should slope slightly away from your house or toward a low point so water runs off instead of pooling. A slope of 1/8 inch per foot is enough—so a 10-foot-wide patio would be 1.25 inches lower on the far edge than the near edge. You do not need to measure this precisely during layout; you will check it as you set the pavers.

Excavate and prepare the soil base

Dig out the entire marked area to a depth of 4 to 6 inches. Remove all grass, roots, and loose soil. The depth depends on your climate: colder areas with freeze-thaw cycles need the full 6 inches of base material, while warmer regions can use 4 inches. If you are unsure, go with 5 inches as a middle ground.

Once the area is dug out, compact the soil firmly. You can do this with a hand tamper (a flat metal plate on a long handle) for small areas, but a plate compactor rented from a home center is much faster and more effective. Walk the compactor over the entire surface two or three times until the soil feels solid and does not give way under your foot. Loose soil underneath will cause pavers to settle unevenly later.

Add and compact the gravel base layer

Spread 2 to 3 inches of crushed stone (also called crushed granite or crusher run) evenly over the compacted soil. Do not use pea gravel—the round stones do not lock together and will shift under the pavers. Crushed stone has angular pieces that interlock and stay in place.

Compact the gravel layer the same way you compacted the soil: use the plate compactor and go over it two or three times. The gravel should feel solid and not move when you walk on it. This layer is what keeps your pavers from sinking over time, so do not skip or rush this step.

Spread sand and create a level screed

Spread 1 inch of coarse sand (sometimes called concrete sand or paver sand) evenly over the compacted gravel. Do not use fine sand or play sand—they compact too much and do not drain. Coarse sand has larger grains and lets water move through it.

To get the sand level and at the right slope, use a screed board: a straight piece of wood (a 2-by-4 works well) that you drag across the sand from one end of the patio to the other. Set the screed board on top of the gravel at the edges, and as you pull it toward you, it will level the sand and create a smooth, even surface. If you want slope for drainage, raise one end of the screed board slightly as you work. Do not compact the sand layer—you want it loose so pavers can settle into it slightly.

Lay the pavers in your chosen pattern

Start at one corner and lay pavers in the pattern you have chosen. Common patterns include running bond (like bricks in a wall), herringbone (pavers at 45-degree angles), or a straightforward grid. Lay pavers tightly against each other with no gaps, and tap each one with a rubber mallet to set it firmly into the sand. Check that each paver is level using a level tool—if one is higher than its neighbors, tap it down; if it is lower, lift it, add a pinch of sand underneath, and reset it.

Work in sections so you do not have to reach too far. Lay a row or a small area, check that it is level, and then move to the next section. If you need to cut pavers to fit edges, use a wet saw (which you can rent) or a paver splitter. Wet saws are cleaner and faster, but splitters work if you only have a few cuts to make.

Fill joints with polymeric sand

Once all pavers are laid and level, sweep polymeric sand into the joints between them. Polymeric sand is regular sand mixed with a polymer that hardens when it gets wet, locking the pavers together so they do not shift. Sweep it in one direction, working diagonally across the patio so the sand fills the gaps completely. Sweep off the excess sand from the surface of the pavers.

After the joints are filled, mist the entire patio lightly with a garden hose—do not spray hard or you will wash the sand out. The water activates the polymer, and the joints will harden over the next 24 to 48 hours. Do not walk on the patio or let water pool on it during this time. Once the polymeric sand has cured, your patio is complete and ready to use.

Frequently Asked Questions

Do I need to use landscape fabric under the gravel?

Landscape fabric is optional. It prevents weeds from growing up through the gravel, but it also traps water and can cause drainage problems. If weeds are a concern, use it, but cut an X over the drain area so water can move through. Many builders skip it and just pull weeds occasionally instead.

What if my patio is on a slope?

A sloped yard is fine—just make sure your patio slopes away from your house or toward a low point, not into it. Adjust the screed board as you level the sand to match the slope you want. The pavers will follow the sand layer underneath.

Can I build a patio on top of existing concrete?

Yes, but only if the concrete is in good condition with no large cracks or heaving. Clean the surface, fill any gaps with concrete patching compound, and lay pavers directly on top with a thin sand layer. You skip the gravel base since the concrete is already your stable foundation.

How long does polymeric sand take to harden?

Polymeric sand usually hardens within 24 to 48 hours after you mist it with water, depending on humidity and temperature. Cooler, drier weather slows the process. Wait at least 24 hours before walking on the patio, and avoid heavy use for 48 hours to be safe.

What should I do if pavers start to shift or sink after a year?

Small shifts are normal as the base settles. If a paver sinks noticeably, lift it carefully, add sand underneath, and reset it level. If many pavers are sinking, the base was not compacted well enough—you may need to reset larger sections. This is why compacting the gravel and soil properly at the start matters so much.