Start with a Level Base and Proper Drainage
A paver patio lasts longer and stays level when you build on compacted soil and sand rather than directly on earth. The foundation is where most patio problems start—frost heave, settling, and water pooling all trace back to a weak base.
Begin by marking out your patio area with stakes and string. Excavate 4 to 6 inches deep, depending on your climate (colder regions need deeper bases to handle frost). Remove grass, roots, and rocks. Compact the soil with a hand tamper or plate compactor—this is not optional. Loose soil will shift under the weight of pavers and foot traffic.
Lay landscape fabric over the compacted soil to prevent weeds from growing up between pavers. Then spread 2 to 3 inches of coarse sand (not play sand) and compact it again. This sand layer lets water drain through and gives you a forgiving surface to set pavers on. Rake the sand level, then use a straightedge across the area to check for high and low spots.
Key Takeaways
- Excavate 4 to 6 inches deep, compact the soil, add landscape fabric, then spread and compact 2 to 3 inches of coarse sand as your base.
- Lay pavers in a running bond or herringbone pattern, leaving 1/8 inch gaps between each one for sand and movement.
- Tap each paver level with a rubber mallet and check constantly with a level to catch high spots before you move on.
- Sweep polymeric sand into the gaps, mist with water to set up the binding agent, and let it cure for 24 hours before heavy use.
- Slope the patio 1/8 inch per foot away from your house so water runs off instead of pooling against the foundation.
Choose Your Paver Pattern and Lay the First Row
The pattern you choose affects both appearance and how stable the patio is. Running bond (each row offset by half a paver) is the easiest for beginners and distributes weight evenly. Herringbone (pavers at 45-degree angles) looks more formal but requires more cuts. Basket weave (alternating pairs of pavers) is straightforward but less stable on larger patios.
Start at the lowest point of your patio—the point furthest from your house. Lay the first row without sand underneath yet; use it as a guide. Place pavers with 1/8 inch gaps between them. You can use plastic spacers or straightforward eyeball the gap if you are comfortable doing so. Lay the entire first row, then step back and check that it is straight using a long level or straightedge.
Once the first row is positioned correctly, remove those pavers and set them back in place one at a time, this time pressing each one firmly into the sand base. Use a rubber mallet to tap each paver down until it sits level with its neighbors. Check with a 2-foot level across every two or three pavers. A paver that sits too high will rock under foot traffic; one that is too low will collect water.
Fill Rows and Check Level Constantly
Work row by row from your starting point toward the house. Maintain the 1/8 inch gap between every paver. As you add rows, check the slope of the patio by running water across it with a hose—it should flow away from the house, not toward it. A slope of 1/8 inch per foot is enough; steeper than that looks odd and can cause pavers to shift.
Tap each paver with the rubber mallet until it is flush with the ones around it. This is tedious and necessary. Pavers that sit proud (higher than the surface) will trip people and rock under weight. Pavers that sit low will trap water. Check your level every few pavers, not just at the end of each row.
When you reach the edges, you will likely need to cut pavers to fit. A wet saw with a diamond blade cuts pavers cleanly and quickly. Mark the cut line with a pencil, then make a slow, steady pass through the paver. Wear a dust mask—paver dust contains silica, which damages lungs. Dry cutting creates more dust; wet cutting is safer and cleaner.
Cut Edge Pavers and find the Perimeter
Measure the gap at the edge of your patio. If it is less than half a paver wide, cut full pavers in half lengthwise and use the halves along the edge—this looks better than a thin sliver. If the gap is wider, cut pavers to the exact width you need.
Once all pavers are laid and level, you can add a paver edge restraint along the perimeter if you want. This is a plastic or metal strip that screws or stakes into the ground and holds the outer pavers in place. It is not strictly necessary for a small patio, but it prevents pavers from shifting outward over time, especially if the patio gets heavy foot traffic.
Fill Gaps With Polymeric Sand
Polymeric sand is regular sand mixed with a binding agent that hardens when wet. It prevents weeds from growing between pavers and keeps sand from washing out during rain. Sweep it into the gaps with a stiff broom, working diagonally across the patio so the sand fills the joints completely. Overfill slightly—the sand will settle.
Once the gaps are full, mist the entire patio with a garden hose on a low setting. Do not spray hard; you want a fine mist that activates the polymeric binder without blasting sand out of the joints. The sand will darken as it absorbs water. Let it dry for 24 hours before walking on the patio or allowing rain.
If you see gaps reappear after the first rain, sweep in more polymeric sand and mist again. This is normal—sand settles as the patio cures. After the second process, the joints should stay full.
Common Mistakes to Avoid
Skipping the base layer or using loose soil is the most expensive mistake. Pavers will settle unevenly, creating trip hazards and water pooling. Spend the time compacting soil and sand properly.
Laying pavers without checking level frequently leads to a bumpy surface that looks unfinished and collects water. Check every few pavers, not just at the end of each row. A 2-foot level is easier to use than a 4-foot one for this work.
Using regular sand instead of polymeric sand means weeds will grow between pavers within a season, and rain will wash sand out of the joints. Polymeric sand costs more but lasts years longer and requires less maintenance.
Forgetting to slope the patio away from your house causes water to pool against the foundation, which can lead to basement leaks and frost damage. A slope of 1/8 inch per foot is subtle but essential.
Maintenance After Installation
A paver patio needs little upkeep. Sweep debris off regularly so it does not trap moisture. If weeds appear between pavers despite polymeric sand, pull them by hand or spray with a weed killer made for pavers—avoid bleach, which can stain.
Every few years, power wash the patio on a low setting to remove algae and dirt. High pressure can damage pavers and blast sand out of joints, so keep the nozzle at least 12 inches away and use a 25-degree tip, not a 0-degree point.
If pavers settle or shift after a few years, you can reset individual ones by removing the polymeric sand around them, lifting the paver, adding or removing sand underneath, and resetting it level with its neighbors. This is much cheaper than rebuilding the whole patio.
Frequently Asked Questions
How long does it take to build a paver patio?
A 10-by-12-foot patio takes a single person about 3 to 4 days of work, spread over a week to allow the base to settle and the polymeric sand to cure. Larger patios take proportionally longer. Most of the time goes to preparing the base and checking level constantly, not to laying pavers.
Can I build a paver patio on top of concrete?
Yes, but the concrete must be clean, level, and not cracked. Sweep it thoroughly and let it dry. Lay pavers directly on the concrete with polymeric sand in the joints—no sand base layer is needed. Water will not drain as well, so make sure the concrete is sloped away from your house.
What is the difference between concrete pavers and natural stone?
Concrete pavers are uniform, affordable, and come in many colors and shapes. Natural stone (flagstone, bluestone, slate) is more expensive and irregular, which makes it harder to lay level but gives a more finished look. Both work the same way—on a sand base with polymeric sand in the joints.
Do I need to seal my pavers?
Sealing is optional. It darkens the color and protects against stains and fading, but it also makes pavers slippery when wet. If you seal, use a product made for pavers and reapply every 2 to 3 years. Unsealed pavers fade over time but are safer underfoot.
What should I do if pavers crack or break?
Remove the polymeric sand around the damaged paver with a grout saw or old chisel. Lift out the paver, replace it with a new one, and refill the joints with polymeric sand. This takes an hour or two and costs only the price of one paver.