Patios, Walkways and Retaining Walls Built for Clay

Everything that matters is buried

Two patios can look identical the week they are finished. Three years later one is flat and tight and the other has a dip by the back door, gaps between the pavers and grass coming up through the joints. The difference was never the paver. It was the base.

Georgia red clay is the reason. Clay holds water, and saturated clay moves. Set pavers on a couple of inches of loose sand over unprepared clay and the whole field rides on top of soil that swells when it is wet and shrinks when it is dry. It will settle, and it will settle unevenly.

So we excavate to real depth, put down fabric where the subgrade is soft, and build up compacted graded aggregate in lifts instead of one thick dump. Each lift gets run with a plate compactor. That base is what your patio is actually standing on, and it is the part nobody sees and nobody can inspect later.

Retaining walls: drainage or failure

A retaining wall is holding back wet dirt. Water in that soil creates pressure against the back of the wall, and a block wall will not win that fight over time. Every wall we build gets clean drainage stone behind it, a perforated pipe at the base, and an outlet where the water can actually leave. That is the difference between a wall that stands and a wall that leans out at the middle and starts stair-stepping apart at the joints.

The base course is the other half. It goes below grade, on compacted stone, and it gets leveled block by block. Every course above it inherits whatever error is in that first one. Taller walls get geogrid tied back into the soil so the wall and the hill behind it act as one mass instead of two.

Height matters legally, not just structurally. Once a wall gets past about four feet, most Georgia counties, Cobb included, want a permit and an engineered design. We check the local requirement before we dig rather than after a neighbor calls it in. If your job needs an engineer, we will tell you that on the first visit.

What we build

• Paver patios, sitting areas and outdoor kitchens on a compacted aggregate base
• Walkways, front approaches and steps that match the house instead of fighting it
• Segmental block retaining walls with drainage stone, pipe and geogrid where the height calls for it
• Timber and boulder walls where the look fits the property
• Terraced walls that turn an unmowable bank into two level, usable spaces
• Seating walls, columns and steps built into the patio, not added onto it
• Concrete work, driveway aprons and pads
• Repair and rebuild of failing walls and settled patios other people installed

Details that decide how it ages

Slope is deliberate. A patio should be pitched away from the house so water sheds instead of pooling at the door. Edge restraint holds the outside course from creeping outward under load, and without it the field spreads and the joints open. Polymeric sand goes in the joints and gets set properly so it locks up instead of washing out in the first hard Georgia thunderstorm.

Where the patio meets the yard, we look at what happens to the water we just redirected. A patio is an impermeable surface. Add several hundred square feet of it and that runoff has to go somewhere. On a lot of properties the right answer is a drain line tied in during the same dig, while the machine is already there and the ground is already open.

Why the same company should do the dirt work

Hardscape sits on grading and drainage, and grading and drainage are what we do. Because it is one company, the base, the wall, the drain line and the sod that goes back down afterward are all on one scope and one price. Nobody is blaming the other trade when a corner settles.