Laying brick for a patio is a project you can do yourself if you prepare the ground properly, choose the right materials, and follow a consistent pattern

The foundation determines whether your patio lasts five years or twenty. You need to dig out the area to a depth of 4 to 6 inches, compact the soil firmly, add a 2-inch layer of landscape fabric to prevent weeds, then lay 2 to 3 inches of compacted gravel or sand as your base. The bricks themselves sit on top of this prepared surface. Most homeowners can complete a small patio (8 by 10 feet) in a weekend once the base is ready, though the base work itself takes a full day.

This guide covers the actual brick-laying process, assumes you have already prepared your ground, and walks you through the tools you need, the patterns that work best, and the mistakes that cause bricks to shift or sink over time.

Key Takeaways

  • Compact your base layer thoroughly with a hand tamper or plate compactor, because loose soil underneath will cause bricks to settle unevenly within months.
  • Lay bricks in a running bond or herringbone pattern, starting from a corner and working outward in straight lines to keep edges aligned.
  • Use a rubber mallet to tap each brick level with its neighbors, checking with a 2-foot level every few bricks to catch high or low spots before you move on.
  • Fill the gaps between bricks with polymeric sand, which hardens when wet and locks bricks in place without washing away like regular sand.
  • The entire laying process takes longer than you expect because checking level and tapping bricks into place cannot be rushed.

Tools and Materials You Will Need

Gather these items before you start, because stopping mid-project to find a tool breaks your rhythm and makes it harder to keep lines straight. You need a rubber mallet (not a metal hammer, which chips bricks), a 2-foot level, a tape measure, a circular saw with a masonry blade for cutting bricks to fit edges, work gloves, and safety glasses. A hand tamper or plate compactor is essential for the base, though you may have already used this when preparing the ground.

For materials, you need patio bricks (also called pavers), which come in standard sizes like 4 by 8 inches or 6 by 6 inches. Calculate how many you need by measuring your patio area in square feet and dividing by the area of one brick—a 4-by-8-inch brick covers 0.22 square feet, so a 100-square-foot patio needs roughly 450 bricks plus 10 percent extra for cuts and breakage. You also need polymeric sand (sometimes labeled "polymeric jointing sand" or "paver sand"), which is regular sand mixed with a binding agent that hardens when moistened. Do not use regular play sand or construction sand, because it washes away and leaves gaps.

Preparing Your Layout and Starting Point

Mark out your patio area with chalk or string so you can see exactly where the first row goes. Dry-lay a row of bricks along one edge without mortar to see how many full bricks fit and where you will need to cut partial bricks at the end. This step prevents you from ending with a row of thin slivers, which look unfinished and are fragile.

Choose a corner as your starting point—usually the corner closest to your house or the most visible corner. Snap a chalk line along the edge where the first row of bricks will sit. This line keeps your first row perfectly straight, which matters because every row after it depends on the first one being level and aligned. If your first row drifts even slightly, the error compounds across the patio.

Dampen the base layer lightly with a hose before you lay the first brick. A damp base helps bricks settle and stay in place, but do not soak it—standing water causes bricks to float and shift. The base should feel like a wrung-out sponge.

Laying the First Row and Establishing Pattern

Place the first brick at your corner, pressing it firmly into the base. Tap it with the rubber mallet until it sits level with the surrounding area. Use your 2-foot level to check that the brick is not tilted—the level should rest flat on top with no rocking. If the brick is high, tap it down; if it is low, lift it, add a pinch of sand underneath, and tap it down again.

Lay the second brick next to the first, leaving a gap of about 1/8 inch between them (roughly the thickness of a dime). This gap is where polymeric sand goes later. Tap this brick level with the first one, checking with your level across both bricks. They should be at the same height. Continue along the first row, checking level every two or three bricks and adjusting as you go.

For a running bond pattern (the most common and forgiving for beginners), the second row starts with a half brick, so the seams do not line up vertically. This staggers the pattern and distributes weight more evenly. For a herringbone pattern, bricks alternate at 45-degree angles, which looks striking but requires more cuts and is harder to keep level. Start with running bond if this is your first patio.

Laying Subsequent Rows and Maintaining Alignment

After the first row is complete and level, lay the second row directly against it, again leaving 1/8-inch gaps. Tap each brick level not just with its when ready neighbor but with the row behind it. Check your level frequently—every three to four bricks—running it lengthwise along the rows to catch any gradual drift upward or downward.

Work outward from your starting corner in a pyramid pattern: complete one corner section fully before moving to the next. This approach lets you adjust as you go rather than discovering halfway through that one section is higher than another. If you notice a brick is sitting higher than its neighbors, tap it down when ready. If it is lower, pull it up, add sand, and reset it. Fixing problems as they appear takes minutes; fixing them after you have laid fifty more bricks takes hours.

When you reach an edge, measure the gap and cut a brick to fit. Mark the cut line with chalk, then use your circular saw with a masonry blade to cut straight through. Wear safety glasses and a dust mask—masonry dust is fine and irritating. Cut bricks are weaker than whole ones, so handle them carefully and tap them gently into place.

Filling Gaps with Polymeric Sand

Once all bricks are laid and level, let them sit for 24 hours so they settle fully. Then sweep polymeric sand across the entire patio, working it into the gaps between bricks. Use a stiff broom and sweep at an angle so the sand fills the joints rather than just sitting on top. You may need to make multiple passes to fill deep gaps completely.

After the sand is in place, mist the patio lightly with a hose. The water activates the binding agent in the polymeric sand, which hardens and locks the bricks together. Do not soak it—a light mist is enough. Let it dry for 24 to 48 hours before walking on it heavily. The sand will harden to a consistency similar to concrete, and the bricks will no longer shift when you step on them.

If you notice gaps reopening after a few weeks, sweep in more polymeric sand and mist it again. This is normal as the patio settles slightly. After the first season, gaps rarely reappear if your base was compacted properly.

Common Mistakes That Cause Problems Later

The most common error is skipping the base preparation or not compacting it thoroughly. Bricks laid on loose soil will sink unevenly within months, creating puddles and tripping hazards. Spend the time to compact the base properly—it is the difference between a patio that lasts and one that fails.

The second mistake is not checking level frequently enough. Many people lay ten or fifteen bricks, then check level and discover they have drifted. By then, fixing the problem means pulling up multiple bricks. Check every three to four bricks and adjust when ready.

A third mistake is using regular sand instead of polymeric sand. Regular sand washes away in rain, leaving gaps that collect water and allow bricks to shift. Polymeric sand costs more but hardens and stays in place for years.

Finally, do not rush the drying time. Walking on the patio or moving furniture onto it before the polymeric sand has hardened can displace bricks and reopen joints. Wait the full 24 to 48 hours.

Frequently Asked Questions

Can I lay bricks directly on soil without a gravel base?

No. Soil compacts unevenly and shifts with freezing and thawing. Bricks will sink and rock within a season. A 2- to 3-inch compacted gravel base is essential in any climate, even warm ones where frost is not an issue.

What if one brick ends up higher than the others after I have laid several rows?

Pull it up, scrape away the sand underneath, add more sand to raise the base, and reset the brick. This takes five minutes now; leaving it high causes water to pool and creates a tripping hazard. Fix it when ready.

Do I need to use mortar between bricks?

No. Polymeric sand is stronger and more flexible than mortar for patios. Mortar cracks as the ground shifts slightly with temperature and moisture changes. Polymeric sand flexes with the movement and lasts longer.

How long does it take to lay a 10-by-10-foot patio?

Plan for 8 to 12 hours of actual laying work spread over two days, plus 24 hours for the base to settle before you start. This assumes your ground is already prepared. The work is not hard, but it is slow because checking level and tapping bricks into place cannot be rushed.

What should I do if it rains after I lay the bricks but before the polymeric sand hardens?

Light rain is fine and actually helps set up the polymeric sand. Heavy rain can wash sand out of joints before it hardens. If heavy rain is forecast, cover the patio with a tarp until the sand has hardened (24 to 48 hours after you misted it).