Exposed aggregate driveways and paving in Wonthaggi

Why exposed aggregate suits the coast

Exposed aggregate is concrete with decorative stones mixed through it. After the concrete is placed and begins to set, the top skin of cement paste is washed away to reveal the stones. The result is a textured surface that grips well in rain and sea mist, hides sand, dirt and tyre marks, and keeps looking good for decades. On the Bass Coast, where driveways are often damp and sandy, those qualities matter more than in most places.

Choosing a pebble blend

Blends vary from pale whites and light greys, which suit beach houses and coastal weatherboards, through mid-grey and blue basalt mixes, to warm browns, rusts and charcoal tones that sit well with brick and darker cladding. Stone size changes the look too: finer stones give a smoother, tighter texture, while larger stones look bolder and feel rougher underfoot. We bring sample boards to the site visit so you can compare blends against your house, roof and garden in natural light, because a blend that looks right in a brochure can look very different on site.

Borders and combinations

A plain or coloured border framing exposed aggregate gives a crisp edge and a place to hide joints. Some owners choose aggregate for the visible frontage and plain concrete for side access and the area behind the gate. Others carry the same blend from the driveway to the front path, porch and alfresco so the whole property feels connected.

How it is poured

Exposed aggregate needs the same groundwork as any driveway: firm ground, compacted rock, steel and planned joints. The difference is on pour day. Timing the wash is critical. Too early and stones are loosened; too late and the paste sets hard over them. Coastal wind makes this trickier because surfaces dry unevenly, so we work in sections, use surface retarders where they help, and wash each area at the right moment. Once cured, the surface is cleaned of haze and joints are cut.

Sealing in salty air

We recommend sealing exposed aggregate, especially within a few kilometres of the beach. A good sealer deepens the colour of the stones, helps keep salt and moisture out of the surface, and makes oil, rust and leaf stains easier to clean. Penetrating sealers keep a natural look; acrylic sealers give more sheen. Anti-slip grit can be added on slopes and around pools.

Exposed aggregate for every part of the property

Exposed aggregate is not only for driveways. We pour it for front paths and porches, side paths, alfresco floors, pool surrounds, courtyards and steps. Using the same blend across several areas ties the house together, while a change of stone size or a plain border can mark the difference between a driveway and a patio. Around pools, finer stones are kinder on bare feet; on driveways, a slightly larger stone gives extra grip and texture.

Understanding blends

A blend is the mix of stones chosen for the surface. Each blend has a different combination of colours and sizes, and the cement colour behind the stones changes the overall look too. White or off-white cement brightens a pale blend; grey cement gives a softer, cooler tone; tinted cement can warm or darken the result. Ready-mix suppliers in the district hold a range of decorative blends, and we can source others. We show you real samples, not printed swatches, because printed colours rarely match.

Coastal blends

Near the beach, many owners choose pale or mid-grey blends that echo sand, rock and driftwood. They stay cooler in summer and suit light weatherboard and Colorbond homes. Darker basalt blends look strong on contemporary homes with dark cladding, but get hotter in sun and show salt bloom and sand more readily, so they benefit from regular rinsing and sealing.

Country and town homes

Inland, warmer blends with browns, creams and rust stones sit well with brick homes and rural surroundings. For the older miners' cottages and period homes around Wonthaggi's centre, a softer blend with a stencilled or plain border often looks more in keeping than a stark modern finish.

Groundwork comes first

An exposed aggregate driveway is only as good as what lies under it. We remove topsoil and loose or soft material, build a compacted rock base, place reinforcement at the right height, and plan joints and falls before the decorative stage begins. On sand, edges are thickened or protected; on clay, drainage and joint layout are especially important.

The washing stage in detail

After the concrete is placed and finished, a surface retarder may be sprayed on to slow the setting of the top layer. Some hours later, depending on temperature, humidity and wind, the surface is washed with water and brushed to remove the paste and reveal the stones. Washing too early dislodges stones; washing too late leaves a cloudy film that is hard to remove. Bass Coast wind can make one part of a slab ready long before another, so we keep checking and wash each section at its own right moment.

Cleaning off the haze

Once cured, exposed aggregate can carry a light cement haze. We clean it off before sealing so the stones show their true colour.

Joints and borders

Saw-cut joints are placed to control cracking. In aggregate, joints are often less visible than in plain concrete, but placement still matters. Borders can be plain, coloured or a different aggregate, and they give a neat line where the driveway meets lawn, garden or a footpath.

Sealers compared

Penetrating sealers leave a natural, matte finish and do not change grip much. Solvent-based acrylic sealers enhance colour and give a wet look, but can be slippery without grit. Water-based options are lower odour and usually less glossy. Close to the coast we often recommend a quality sealer that resists salt and UV, reapplied every few years.

Living with exposed aggregate

Rinse sand and salt off occasionally, especially after storms. Sweep leaves and gum nuts so they do not stain. Clean oil drips quickly with a suitable degreaser. Avoid harsh acid cleaners that can etch the surface. When water no longer beads on the surface, it is time to reseal.

Repairs and additions

If part of an exposed aggregate area needs replacing, for example after plumbing work, an exact match is difficult because blends and weathering change. We can use a border or a joint line to make a new section look intentional, and we try to source the same blend.

Exposed aggregate versus other finishes

Compared with plain concrete, exposed aggregate costs more but looks better, hides wear and gives more grip. Compared with coloured concrete, it fades less because the colour comes from the stones themselves. Compared with pavers, it does not move or let weeds through. Compared with stamped concrete, it is less slippery and simpler to maintain.

Common questions on site

People often ask whether aggregate is hard to clean (it is not, though sand lodges in the texture), whether it suits steep driveways (yes, it gives good grip), and whether it will look like the photo on the website (we show real samples to avoid surprises).

Matching aggregate to the rest of the house

When choosing a blend, look at the fixed colours of the home: the roof, the window frames, the cladding or brick, the fence and the letterbox. A blend that picks up one or two of those colours tends to look settled and deliberate. A blend that contrasts with everything can look busy. If the house is being painted or reclad, choose the aggregate after the colours are confirmed.

Steps, edges and transitions

Exposed aggregate steps need careful forming so edges are crisp and nosings are safe. Where aggregate meets a timber deck, a door threshold or a garage slab, we form neat transitions so there is no trip edge and water drains away from the building.

Pool surrounds in detail

Pool surrounds in exposed aggregate should use a fine blend for comfort, fall away from the pool so water and debris do not wash in, and be sealed with an anti-slip product. Coping can be bullnosed concrete, stone or tile. We work with your pool builder on levels, safety barriers and the timing of fence installation.

Exposed aggregate on sandy beach blocks

On pale dune sand, edges need extra support so they do not wash out in heavy rain. We thicken edges or form them against compacted rock, and we make sure downpipes are connected so roof water does not pour onto the slab edge. Sand blowing onto a fresh aggregate surface during washing can be a nuisance, so on windy days we may screen the area.

Exposed aggregate on clay

On inland clay sites, the base and drainage matter more than the finish. Water sitting under a slab on clay causes movement. We use well-compacted rock, ag drains where needed, and joint layouts that allow for small movements without random cracks.

Why we wash in sections

Large driveways can take several hours to place and finish. Concrete placed first will be ready to wash before concrete placed last. Working in sections, with joints planned between them, lets us wash each area at its ideal time and gives a more consistent finish.

Exposed aggregate and heat

Lighter blends reflect more heat, and in a sunny Bass Coast summer that makes a real difference for bare feet and pets. If the area is around a pool, a patio or a play space, a lighter blend and finer stones are usually the better choice.

A word about cost comparisons

Exposed aggregate quotes vary because blends, cement colours, borders, base depth, access and sealing differ. When comparing quotes, check that each one names the blend, the base and the sealing, and that the area and thickness are the same.

Exposed aggregate for commercial and shared areas

Beyond homes, exposed aggregate suits shop frontages, community buildings, holiday accommodation, caravan park paths and strata driveways where grip, durability and a tidy appearance matter. For owners corporations, we can stage work so residents keep access and plan around holiday-season occupancy on the coast.

Planning your exposed aggregate job

A smooth project starts with clear decisions. Before pour day we confirm the blend and cement colour, the border detail, the joint layout, where downpipes and drains connect, the finished levels at doors and the garage, the sealer type, and how long the area needs to stay off limits. We also agree on access for the truck or pump, where the wash water will go so it does not run into gardens or stormwater pits untreated, and how neighbours' driveways will be protected.

Wash water and the environment

Washing exposed aggregate creates a slurry of cement paste and water. It should not run into stormwater drains, creeks or the sea. We contain wash water on site and dispose of it responsibly, which matters along the Bass Coast where drains often discharge to beaches and inlets.

Sample boards and test panels

For larger jobs or when owners are torn between two blends, a small test panel can be poured on site or at the yard so you can see the blend in your own light, wet and dry, before committing. It costs a little time but removes doubt on a surface that will be there for decades.

Getting started

Call 03 7075 1956 or send the form with your town, the area you want done and a few photos. We will visit, test the ground, bring blend samples and send an itemised written quote for your exposed aggregate driveway, path or patio.

Build specification at a glance

Bass Coast ground, weather and council rules

Wonthaggi sits where the coastal dunes of the Bunurong coast meet the clay country rising toward the Strzelecki foothills. Near the beaches at Cape Paterson, Inverloch and Kilcunda the ground is often pale sand that drains fast but moves if it is not confined and compacted. Inland, around North Wonthaggi, Dalyston and the farms, heavy clay swells in a wet winter and cracks open in a dry February. Parts of the old coal-mining town also carry fill, ash and brick rubble from a century of building. Add salt spray, sea mist and strong south-westerly winds, and concrete here needs a properly designed base, the right mix and careful curing. Each job gets a test hole, and the base is designed around the layers it shows.

Driveways, paths and patios within your own boundary usually need no permit. Any new or altered crossover across the nature strip, footpath or kerb needs a vehicle-crossing permit from Bass Coast Shire Council, which covers Wonthaggi, Inverloch, Phillip Island, San Remo and every town we work in. Accesses onto the Bass Highway or other main roads also involve the state road authority. House slabs, larger sheds and some coastal works need a building surveyor and engineering. We spell out whatever applies in your quote.

What a Wonthaggi Concreting quote shows

Our quotes are broken into the parts of the job rather than a single total. You will see the measured area, demolition and tip fees for any old concrete, pavers or gravel, how deep we excavate, the rock base specification and compaction method, slab thickness and reinforcement, the surface finish or pebble blend, the joint plan, drains and stormwater connections, edges and steps, sealing, and the council vehicle-crossing permit where one is needed. If a concrete pump, a long wheelbarrow run, traffic control on the Bass Highway or protection for a neighbour's driveway is required, it is listed on its own line.

This site deliberately carries no square-metre pricing. On the Bass Coast the same size driveway can sit on clean dune sand in Cape Paterson, wet grey clay in North Wonthaggi or old mine fill in South Dudley, and each needs different groundwork. A price published online would be wrong for most readers, so we prefer to look at your block and quote what it actually needs.