Comparison · Driveways
Exposed aggregate vs plain concrete
By Nathan Carter, owner, Gold Coast Concrete Services. Reviewed October 2026.
Quick answer
Exposed aggregate has the top layer of cement washed away to show the stone, which gives a textured, decorative surface that hides dirt and tyre marks. Plain concrete is a smooth or broomed grey surface that is quicker to lay and suits utility areas. Both have the same structural strength when built correctly.
| Exposed aggregate | Plain concrete | |
|---|---|---|
| Look | Natural stone colours and texture | Even grey, broom or trowel texture |
| Grip when wet | Good | Good with broom finish; poor if smooth |
| Hides stains | Very well | Shows oil and tyre marks |
| Installation | Extra washing step on pour day | Simplest finish |
| Sealing | Recommended every 2–3 years | Optional |
| Best for | Driveways, paths, pool areas | Sheds, side paths, slabs to be covered |
How exposed aggregate is made
Exposed aggregate starts with a concrete mix that contains decorative stone, such as river pebble, quartz or local blends. After the concrete is placed and levelled, a surface retarder slows the top few millimetres from setting.
A few hours later we wash the surface with water to remove that top layer of cement paste, which reveals the stone. The slab is then cleaned, cured and sealed. Timing is everything: wash too early and stones come loose, too late and they stay buried.
How plain concrete is finished
Plain concrete uses a standard grey mix. Once it is levelled it is floated and then finished one of three ways: a broom drawn across the surface for grip, a steel trowel for a smooth dense surface, or a sponge or sand finish for a fine texture.
Because there is no washing step, plain concrete is quicker to finish and has fewer things that can go wrong on pour day.
Look and colour
Exposed aggregate looks like a natural stone surface and comes in many stone blends, from light quartz to dark river pebble. You choose from samples at the site measure.
Plain concrete is an even grey that lightens as it cures. Oxide can be added to either finish to change the colour of the cement, such as charcoal or sandstone.
Maintenance and wear
The texture of exposed aggregate hides tyre marks, leaf stains and dirt, which is why it is so popular for front driveways. A sealer keeps the stone colour rich and stops oil soaking in. Plan to reseal every two to three years.
Plain concrete shows marks more easily, particularly oil under parked cars. It does not need sealing, but a clear sealer makes it much easier to clean.
Which should you choose?
Choose exposed aggregate where the concrete is on show and gets dirty, such as front driveways, entertaining areas and pool surrounds. Choose plain concrete where looks matter less, such as side paths, shed slabs and bin pads, or where tiles, pavers or coatings will go on top later.
Many homes mix both: exposed aggregate at the front, plain concrete down the side and around the shed.
Common questions
Can plain concrete be turned into exposed aggregate later?
Not directly, because the stone has to be exposed while the concrete is fresh. An existing slab can be honed to show some stone, or resurfaced with a decorative coating.
Is exposed aggregate slippery around pools?
Exposed aggregate has good grip when wet. Choose a sealer with an anti-slip additive for pool areas, because a glossy sealer can reduce grip.
Does exposed aggregate hurt bare feet?
Most stone blends are rounded and comfortable to walk on. Ask to see a sample if you want a smoother stone for kids and pool areas.
Is exposed aggregate stronger than plain concrete?
No. Strength comes from the mix, thickness, steel and base. Both finishes are equally strong when built to the same specification.
More on driveways
- What affects the cost of a concrete driveway?
- Concrete vs pavers for a driveway
- How thick should a concrete driveway be?
- Driveway crossovers on the Gold Coast
- Concrete Driveways
