If you’ve been researching driveway or outdoor surface ideas for inspiration for a new makeover, you’ve probably come across the term and/or pictures “exposed aggregate concrete”. It looks stylish and seems to pop up in every modern streetscape, but what exactly is it?
That’s what this guide is for. We’ll walk you through what exposed aggregate concrete is, how it’s made, what it looks like, and where it’s commonly used, so you can decide whether or not it’s a good fit for your home.
What Is Exposed Aggregate Concrete?
Basically, exposed aggregate concrete is standard concrete with its “top layer” removed to reveal the stones (aggregates) within the mix.
Instead of the usual smooth, plain grey slab, the concrete surface is carefully washed back to “expose” decorative stones, pebbles or crushed rock embedded within. The result? A textured, slip-resistant finish that retains all the strength and durability of the concrete underneath.
Different stone blends – which come in various sizes, shapes and colours – give exposed aggregate concrete plenty of flexibility. It can deliver a crisp, modern finish for a driveway or a more relaxed, natural feel for paths and pool surrounds.
Key Benefits of Exposed Aggregate Concrete
Here are some advantages of exposed aggregate that make it a popular choice among many homeowners looking to spruce up their outdoor areas.
Built to Last
Under all the decorative stone, it’s still a solid concrete slab. If properly installed and cared for, it handles cars, kids, pets and the unpredictable Melbourne weather for years without issue.
Better Grip Underfoot
The exposed stones add texture to the surface, giving it more character than plain concrete. That added grip is useful in high-traffic areas and places that tend to get wet, such as paths and pool surrounds.
Great Design Flexibility
You’re not stuck with a flat colour. Different stone blends and modern exposed aggregate colours let you tie the driveway into your façade, roof and garden, so it doesn’t feel like an afterthought.
White Exposed Aggregate Concrete
Grey Exposed Aggregate Concrete
Low-Maintenance Surface
With the right sealer, cleaning an exposed aggregate concrete surface is usually as straightforward as occasional sweeping and hosing down. The natural variation in colour also helps to disguise minor marks from everyday use.
Kerb Appeal
A well-designed exposed aggregate driveway or entry path can significantly boost your property’s overall street appeal, giving it a more finished, intentional look.
How Is Exposed Aggregate Concrete Made?
The basic idea is simple – you pour a specially-chosen concrete mix down and then remove the very top layer before it fully sets – but the actual process needs skill and timing.
Typically, it involves:
- Preparing the base: The old material is removed, then the ground is levelled and compacted so the slab has a solid base to sit on.
- Placing formwork: Boards or steel forms are set up to mark out the driveway or path and to set the height and fall for drainage.
- Pouring the concrete: The exposed aggregate mix is poured, spread, and levelled to the correct thickness.
- Surface treatment: After the concrete has started to harden, the top paste is washed or brushed back so the stones show through.
- Curing and sealing: Once it has cured, a sealer is applied to help protect the surface and bring out the colour.
For a more detailed explanation of how we do exposed aggregate, check out our separate guide on the subject.
Where Is Exposed Aggregate Concrete Used?
Driveways are one of the most popular use cases for exposed aggregate. That’s because exposed aggregate is tough enough to withstand regular vehicle use and exposure to all kinds of weather, but still adds a bit of visual and textural interest to the front of the home.
However, you can also transform other areas of your home with exposed aggregate concrete, including:
- Front paths and entryways
- Alfresco areas and patios
- Pool surrounds and garden paths
- Steps and landings
Is Exposed Aggregate the Right Material for Your Home?
Exposed aggregate concrete works well for homes where the driveway and outdoor areas need to be both practical and presentable.
It may be a good fit if you:
- want something tougher than pavers or loose stone
- don’t like the look of plain grey concrete
- have a sloping driveway, pool area or high-traffic paths where extra grip helps
- like the idea of colour and texture that ties in with your brickwork, roof or garden
If you prefer a very smooth, minimalist finish, or if you are choosing flooring for inside the home, another type of concrete or surface may suit you better.
For outdoor areas, especially driveways and other hard-working spaces, exposed aggregate is usually worth considering as one of your main options.
Discover Exposed Aggregate Concrete With A Better Driveway
If you are considering exposed aggregate for your home and would like clear, practical advice, A Better Driveway is here to help. As experienced driveway contractors in Melbourne, we can walk you through mix, colour and layout options that suit both your personal style and can withstand Melbourne’s challenging conditions. Contact us today to learn more!