A paver patio looks simple once it is finished: a flat, even surface with tight joints and clean edges. What decides whether it stays that way is almost entirely underground and happens in the first two or three days of the job. By the time the pavers go down, most of the patio's future has already been settled.
If you are planning a patio for next season, it helps to know what a proper installation involves, in order, so you can tell a thorough bid from a fast one.
What happens before anyone digs?
Design comes first, and on a well-run project it is more than a pattern choice. The layout should answer how the patio will be used, how it connects to the house and the yard, where water goes when it rains, and whether steps, seat walls, lighting or a fire feature belong in the plan now or in a later phase. Deciding those things on paper is far cheaper than retrofitting them into a finished surface.
Two practical steps follow. Michigan law requires a MISS DIG 811 locate request before excavation, so buried utility lines are marked before the machines arrive. And the site gets checked for access: how equipment and pallets reach the backyard, and what lawn or planting beds sit in the path.
How deep does a paver patio get excavated?
Deeper than most homeowners expect. The crew removes sod, topsoil and any organic material, then digs to a depth that allows for the aggregate base, the bedding layer and the paver itself. On the heavy clay soils common across Macomb and Oakland counties, that base is typically built thicker than it would be on sandy, fast-draining ground, because clay holds water and moves as it freezes and thaws.
The excavation also extends past the finished edge of the patio. The base needs to reach beyond the pavers so the edge units sit on the same support as the middle of the patio. Edges that sit on the margin of the base are where settling usually starts.
Why does grading matter so much?
A patio has to shed water, and it has to shed it away from the house. The excavated subgrade is shaped to a gentle, consistent pitch before any stone goes in, so the finished surface carries that same slope. A patio pitched toward the foundation, or one that traps water against a step, will show the mistake every spring.
Where the yard itself drains poorly, the patio is the moment to fix it. Tying the patio into drainage solutions such as a catch basin or a regraded swale costs far less during construction than after the pavers are down.
What goes into the base?
The base is crushed, angular aggregate, placed and compacted in lifts rather than dumped in one pass. Compacting a few inches at a time with a plate compactor is what produces a dense, stable layer. Dumping the full depth and compacting only the top leaves a soft middle that settles later.
Many installers lay a geotextile fabric over the native soil first. On clay, it keeps the aggregate from working down into the subgrade over the years, which preserves the thickness you paid for. It is a small line item and a reasonable thing to ask about when you compare bids.
How are the pavers actually laid?
On top of the compacted base goes a thin, uniform bedding layer, screeded flat with rails. This layer is for fine leveling only; it is not meant to make up for an uneven base. Pavers are then set by hand in the chosen pattern, working off string lines so courses stay straight across the whole patio.
Cuts come last. Pattern choice affects how many there are, and some patterns are stronger under load and more cut-intensive than others. Our guide to paver installation patterns walks through the tradeoffs. Clean, full-depth cuts along curves and borders are one of the easiest ways to judge the quality of a finished job.
What holds a paver patio together?
Two things: edge restraint and joint sand. A concrete or rigid edge restraint, anchored along the perimeter, stops the field from creeping outward. Without it, the outer rows drift and the joints open up, often within the first couple of seasons.
After the field is laid, the surface is compacted again with a pad on the plate compactor, which seats the pavers into the bedding layer. Then jointing sand, often polymeric, is swept in and activated. Tight, full joints are what lock individual pavers into a surface that moves as one piece.
How long does paver patio installation take?
The build itself is usually measured in days, not weeks. A straightforward patio can move from excavation to finished joints within a week. Larger projects with seat walls, steps, lighting or drainage work take longer, and so does any project that waits on weather: compaction and polymeric sand both want a dry window.
The longer part of the timeline is usually design and scheduling. Spring is the busiest stretch of the year, so a project that arrives with layout, materials and scope already decided is much easier to put on the calendar.
Can you install a paver patio in the fall?
Yes, and fall is often a good time. Soil is typically drier than in spring, and most installation steps can continue until the ground freezes. Late-season work does depend on the forecast, so schedules have more flex in them after October.
Even when the build waits for spring, fall and winter are the right time to design. A finished plan lets you compare bids on the same scope, and it gets your project on the calendar ahead of the spring rush.
What should you compare between bids?
Compare the assembly, not the paver. Ask each contractor how deep they excavate, what base material they use and how it gets compacted, whether fabric goes down, what edge restraint they install and how the patio drains. Two quotes for the same paver can describe very different patios.
For how material, base and site access move the total, see our paver patio cost guide. If you are still deciding on material, our posts on clay brick versus concrete pavers and how to choose brick pavers cover the specifications that matter.
Planning a paver patio?
Great Lakes Landscaping designs and builds paver patios across Southeast Michigan from our Chesterfield headquarters, along with the grading, drainage, walls and planting around them. See our paver installation service and the rest of our hardscape work, then contact us or call (586) 754-7336 to talk through layout, materials and timing for your property.