What's the cost of exposed aggregate concrete? [2025]

What is exposed aggregate concrete?

Exposed aggregate concrete is a decorative concrete created by removing the top layer of cement and revealing — or adding — the aggregate.

The aggregate is usually small stones, pebbles, sand or gravel but can even be shells, repurposed glass or other decorative materials that add colour and texture to the finished surface.
You should always have your concrete professionally installed, which is done by using a special mix of aggregate and concrete prepared and poured into the desired shape.
 

Once it has set, a chemical or mechanical process is used to remove the top layer of cement and expose the aggregate. The final recommended step is to seal the surface to make it as durable and long-lasting as possible.

It's the ideal choice if you're in the market for a new concrete driveway, concrete pools, or you're laying concrete elsewhere on your property.

What are the pros and cons of exposed aggregate concrete?

There are many benefits, including durability and low maintenance, but like any home decor choice, there are cons too.

Benefits of exposed aggregate

• Durability: Depending on the choice of aggregate, this is a highly durable and long-lasting choice, making it ideal for high-traffic areas such as driveways
• Low maintenance: This type of concrete doesn't need to be polished like others, making it a low-maintenance option. Remember to seal it when it's first installed (and every five years or so) to keep it in tip-top condition
• Attractive appearance: The small stones, shells, gravel, or glass add texture and colour to the finished surface, giving it a unique look
• Slip-resistant: Exposed aggregate is slip-resistant, making it a safe choice for driveways and other areas where people will be walking or driving
• Versatility: It can be used in various applications, including driveways, patios, walkways, and pool decks
• Customisable: The type and size of the aggregate used can be customised to suit your specific needs and preferences, with the option of choosing contrasting or complementary colours (you can even get coloured concrete)

Cons of exposed aggregate

• Cost: Exposed aggregate concrete costs may be more expensive due to the labour-intensive process of creating and installing, and the specialised materials (depending on what aggregate you choose)
• Rustic appearance: The fresh concrete surface has a more natural and rustic appearance than, say, a standard concrete driveway, but this means that it may not be suitable for all design styles
• Professional installation: Concrete aggregates require specialised equipment and techniques for installation, and it is essential to work with a professional contractor who has the experience, excellent references, and the correct licences for your concrete jobs
• Potential staining if not maintained correctly: If it isn't sealed, it may become susceptible to staining and deterioration over time. It's important to regularly seal the exposed concrete to protect it from the elements and to maintain its appearance
• Damage over time: Some aggregate types are more susceptible to damage in high-traffic areas (such as decorative stones) than other choices (such as gravel). Your contractor will be able to advise

What factors affect exposed aggregate concrete cost?

Concrete costs vary depending on the following factors.

• Type and size of the aggregate: The type and size of the aggregate used can impact the project's overall cost. Different types of aggregate, such as crushed stone, pebbles, or shells, will all have different prices
• The complexity of the design: If the exposed aggregate concrete design is complex and requires a lot of custom work, it will likely be more expensive than a simple, straightforward design
• Location of the project: The cost of materials and labour can vary depending on where you're based due to the local cost of living, materials, and labour costs
• Condition of the site: If the site is in poor condition and requires extensive preparation work, it may increase the project's overall cost

How long does exposed aggregate concrete last?

With proper care and maintenance, exposed aggregate concrete can last for decades. In general, exposed aggregate is a durable and long-lasting material, resistant to wear and tear, and can withstand heavy traffic and harsh weather conditions.

However, the exact lifespan of your exposed aggregate driveway or other surfaces will depend on several factors, including the quality of the materials used, the thickness of the concrete, the amount of traffic the surface receives, and the level of maintenance it receives (such as sealing).

How much does exposed aggregate concrete cost per square metre?

Exposed aggregate concrete costs anywhere from $100 to $150 per square metre, plus labour. If you're ordering direct from a concrete supplier, the price will be in cubic metres and can be anywhere from $200–$350, depending on its strength.

In Addition to the material costs, concreters charge an average of $67.50 per hour. This does vary depending on where you are in Australia.

Compared to normal class concrete ($60–$85 per square metre) or reinforced concrete ($65–$90 per square metre), aggregate is a more expensive choice.

However, an exposed aggregate driveway or pool deck area is usually worth the investment.

How much does exposed aggregate concrete cost per cubic metre?

If you're ordering directly from a concrete supplier, the cost will be calculated in cubic metre (m3). The cost of concrete per cubic metre in Australia can be anywhere from $200–$350, depending on its strength.

If you're renovating or need to remove existing concrete, you may also need to consider the cost of cutting concrete. This depends on the depth of the concrete, with costs such as $15 per metre for 100mm depth and $40 per metre for 300mm depth.

Understanding concrete grades and strengths

When ordering concrete for projects like concrete driveways, you must ensure it's strong enough for your needs.
The strength of concrete is rated using a grading system measured in megapascals (MPa), with standard grades ranging from 20 to 50 MPa depending on the job.

• 20 MPa – suitable for a house slab, footpath or standard concrete driveway
• 25 MPa or 32 MPa – recommended for an exposed aggregate driveway
• 40 MPa or 50 MPa – recommended for a driveway that will experience heavy traffic or loads

Concrete is also categorised as normal class concrete or special class concrete. Exposed aggregate is a special class concrete.

Hiring an exposed aggregate concrete contractor

Overall, exposed aggregate concrete is a durable, low-maintenance, and attractive option for driveways, patios, and other outdoor surfaces.

While it may be more expensive than traditional concrete, it is a long-lasting investment that can add value and curb appeal to any home.

If you're considering using exposed aggregate concrete for your next outdoor project, be sure to work with a professional contractor who has experience with this type of decorative concrete.

*Costs and prices in this article are indicative and should only be used as a guide. They also vary locally and are subject to market forces.