Guides › Exposed aggregate vs plain concrete
For most Sunshine Coast homes exposed aggregate is the better all-rounder, because it grips well on wet subtropical driveways and around pools, a lighter stone stays cooler underfoot in the heat, and it suits the coastal and resort look, while plain grey concrete is the cheaper choice for a sheltered, flat block. Both sit on the same base and steel, so the decision comes down to grip, heat, looks and budget rather than strength.
This is one of the most common questions we get asked before a driveway or pool surround goes in, and the honest answer changes with the block. Below is how the two finishes actually compare for Coast conditions, so you can pick the one that fits your job.
Plain grey concrete is exactly what it sounds like: a standard mix, screeded, trowelled and left smooth or lightly broomed. It is the default finish, the cheapest, and it does the job on plenty of driveways.
Exposed aggregate is the same structural concrete, but with a decorative stone blended through the mix. Once the slab is poured, the top layer of cement paste is washed back to reveal the stone underneath, leaving a textured, pebbled surface. You choose the aggregate, so the colour and the look are yours, from a fine cream-and-tan mix that reads light and coastal to a darker river-stone blend. Underneath, both finishes need the same excavation, compacted base, reinforcing steel on chairs and control joints. The difference is only at the surface.
The Sunshine Coast is where exposed aggregate really earns its keep, for three local reasons.
Grip in the wet. The Coast has a proper subtropical wet season, with heavy afternoon storms through summer, and homes here almost always have a pool. A smooth trowelled plain driveway is slippery when it is wet, and a wet pool surround in plain concrete is a genuine hazard. The exposed stone gives a textured, non-slip surface that grips wet feet and tyres, which is why you see it around so many Coast pools and on sloped driveways from Buderim to Mooloolaba.
Heat underfoot. Summers here are hot and people walk these surfaces barefoot, between the house, the pool and the shed. Dark plain grey concrete soaks up the sun and gets uncomfortably hot. A lighter coloured aggregate reflects more of that heat and stays noticeably cooler to walk on, which is a real day-to-day difference in a Coast summer.
The look. Exposed aggregate simply suits the coastal and resort feel that most Coast homes are going for, and it hides marks and leaf stain better than flat grey. Plain concrete is more utilitarian, which is perfectly fine for a hidden side path or a shed slab but less so for the front of the house.
None of this means exposed aggregate wins every time. Plain grey is the sensible choice when the budget is tight, when the surface is out of sight, or when it is a sheltered, flat block that never gets wet and slippery. A shed slab, a side access path, a garage floor or a driveway on a low-traffic block are all jobs where paying for a decorative finish adds little. Plain concrete also gives you the cleanest base to resurface later if you change your mind. The point is to match the finish to the job rather than defaulting to the dearest one.
As a rule, plain grey is the cheapest finish and exposed aggregate carries a premium for the decorative stone and the extra labour to wash back and finish the surface. For indicative supplied-and-laid ranges across the Coast, see our concrete driveway cost guide. If you have landed on exposed aggregate, our exposed aggregate page walks through how the finish is done and where it works best, and the driveways page covers the full build either way.
Still not sure which finish suits your block? Tell us what you are after and we will get a local concreter out to talk it through and price both options properly. There is no cost and no obligation.
Call 0482 392 415 or send the details through the contact page.
For most Coast homes, exposed aggregate is the better all-rounder because it grips well on wet subtropical driveways and around pools and suits the coastal look, while plain grey is the cheaper choice for a sheltered, flat block. Both need the same base underneath, so the decision is about grip, heat, looks and budget rather than strength.
It depends on the stone. A lighter coloured aggregate reflects more sun and stays noticeably cooler underfoot than dark plain grey, which matters around Coast pools and on paths people walk barefoot. Choosing a lighter stone is one of the simplest ways to keep a driveway comfortable through summer.
No, the opposite. The exposed stone gives a textured, non-slip surface that grips wet feet and tyres, which is exactly why it is popular on the Coast where wet-season storms and pool surrounds are common. A smooth trowelled plain finish is the slippery one when it is wet.
Plain grey concrete is the cheapest finish and does the job on a flat, sheltered block. Exposed aggregate costs more because of the decorative stone and the extra labour to wash back and finish the surface. The base, steel and prep underneath cost the same either way.
Local concreters who work the coast and the hinterland.
📞 Call 0482 392 415