Plain vs Exposed Aggregate: Which Is Right For Your Driveway?

If you're planning a new driveway in Brisbane, you've probably narrowed your finish options down to two clear favourites: plain concrete and exposed aggregate. Both are durable, both handle the South-East Queensland climate well, and both will outlast cheaper alternatives like asphalt or gravel by decades. But they're not the same product — and choosing the wrong one for your property can mean either overspending on a finish you didn't need, or settling for a look that lets the rest of your home down.

This guide breaks down the real differences between the two so you can have a confident conversation with your Brisbane concrete contractors before signing anything.

What Is Plain Concrete?

Plain concrete is exactly what it sounds like: a smooth, monolithic slab finished with a broom, trowel, or salt texture for grip. It's the classic Brisbane concrete driveway you've seen on thousands of homes across the suburbs — from older Queenslanders in Paddington to newer builds out in Ripley and North Lakes.

The finish is typically light grey, though it can be coloured with oxide dyes mixed into the wet concrete if you want a charcoal, sandstone, or terracotta tone. The most common surface textures are:

• Broom finish — a fine, parallel-line texture created by dragging a broom across the wet surface. Provides excellent grip and is the most common Brisbane driveway finish.
• Salt finish — coarse salt is pressed into the wet concrete then washed out, leaving small pits that give it a subtle, weathered look.
• Trowel finish — smoother and more refined, but generally avoided on driveways because it gets slippery when wet.

Plain concrete is the workhorse of Brisbane driveways. It's reliable, affordable, and when it's done well by experienced Brisbane concrete contractors, it can last 30 to 50 years with minimal maintenance.

What Is Exposed Aggregate?

Exposed aggregate takes the same concrete base and reveals the decorative stones inside it. After the slab is poured, the top layer of cement paste is washed away — usually with a surface retarder and a high-pressure wash — to expose the aggregate underneath. The result is a textured, decorative finish that looks like natural stone pebbles set in mortar.

The aggregate itself can be customised. You can choose from local options like:

• Quartz and granite blends — bright, sparkly finishes popular in modern Brisbane builds
• River pebbles — softer, rounded stones in earthy tones
• Crushed basalt — dark charcoal or near-black for a contemporary look
• Coloured glass or recycled aggregate — for statement projects

The colour, size, and density of the stone all affect the final appearance. Larger aggregate gives a chunkier, more rustic look; smaller aggregate looks refined and almost architectural.

Exposed aggregate has become the go-to premium finish for concrete driveways Brisbane homeowners want when they're investing in kerb appeal — particularly across renovated homes in Bulimba, Hawthorne, Ascot, and the inner-west.

Price & Feature Comparison

Let's get the money question out of the way first, because it's usually the deciding factor. Here's how the two finishes stack up across the metrics that matter most to Brisbane homeowners.

The 15–20% premium for exposed aggregate buys you a finish that's more visually distinctive and tends to add more to your property's resale value, particularly in Brisbane's design-conscious inner suburbs. Whether that's worth it depends on how much your driveway contributes to the overall presentation of your home.

Durability and Lifespan

Here's where things get interesting. Both finishes use the same underlying slab, so the structural durability is identical. A properly built 100mm slab with appropriate reinforcement will handle Brisbane's clay soils, summer storms, and the occasional heavy vehicle for decades.

The differences show up at the surface. Plain concrete is harder to damage cosmetically. Scratches and scuff marks are less visible. When stains do appear — and they will, especially from leaking cars, garden mulch, or fertiliser overspray — they're easier to clean or grind out.

Exposed aggregate is more forgiving in some ways and less in others. The textured surface hides minor wear, leaf litter staining, and the everyday grime that shows up clearly on smooth concrete. However, if individual stones come loose (which can happen on poorly finished jobs), repairs are more visible.

In Brisbane's climate, both finishes need to be sealed to perform at their best. UV exposure, salt air in bayside suburbs like Wynnum and Manly, and the freeze-thaw cycles in elevated areas like Mount Gravatt or The Gap can all accelerate wear on unsealed concrete.

Grip, Safety, and Pool-Adjacent Areas

If your driveway slopes — and many Brisbane properties do, especially in suburbs like Toowong, Indooroopilly, and Kenmore — surface grip matters more than aesthetics.

Exposed aggregate is naturally non-slip because of its textured surface. Even when wet, the exposed stones provide consistent grip. This makes it an excellent choice for sloped driveways, pool surrounds, and pathways where safety is a priority.

Plain concrete with a broom finish performs almost as well in dry conditions, but smooth or trowel-finished plain concrete can become slippery in heavy rain. If you're going with plain, insist on a broom or salt finish — not a smooth trowel.

Heat in the Brisbane Summer

This one matters more than people realise. Brisbane summers regularly push surface temperatures above 50°C on dark, sunny pavements.

Plain concrete in its natural light grey reflects more heat and stays cooler underfoot. If you've got kids running barefoot from the house to the pool, or dogs that use the driveway, light-coloured plain concrete is gentler.

Exposed aggregate can run hotter, especially with darker aggregates like basalt or charcoal granite.

Maintenance Reality

Both finishes are low-maintenance compared to pavers or asphalt, but they need slightly different care.

What About Resale Value?

For homeowners thinking about resale, exposed aggregate generally has the edge in Brisbane's competitive property market. Real estate agents across the inner and middle ring suburbs consistently report that a well-presented driveway is one of the first things buyers notice during inspections.

That said, a beautifully laid plain concrete driveway in a coloured charcoal or sandstone tone can look just as premium as exposed aggregate at a lower cost. The deciding factor is often the rest of the home — exposed aggregate suits modern, contemporary builds; coloured plain concrete pairs well with traditional Queenslanders, federation homes, and Hamptons-style renovations.

Choosing Your Finish

Use this quick guide to match the right finish to your situation.

Common Mistakes Brisbane Homeowners Make

After years of working with Brisbane homeowners, the same mistakes come up again and again:

Quick Decision Framework

If you're still torn, ask yourself these three questions: