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How to Clean Exposed Aggregate Concrete

Get Yourself A Perfect Slab.


Concrete, the unsung hero of our urban landscapes, forms the backbone of our cities, our homes, and our businesses. Among the various types of concrete, exposed aggregate concrete is a popular choice due to its aesthetic appeal and durability. But how do you maintain and clean it? Skyco Group, an industry leader in Australia, provides a step-by-step guide on how to clean exposed aggregate concrete, ensuring you get the most from your investment.

Table of Contents

Exposed aggregate concrete offers a unique blend of durability and visual appeal, with a surface that’s studded with a mix of small stones and pebbles, a finish that not only adds an element of beauty to any setting but also holds up well against the harsh Australian climate.

Step 1: Initial Cleaning

First things first, clear away any loose debris from the concrete. This includes leaves, dirt, and other detritus that might be lying around.

Pro Tip: Consider using a broom with stiff bristles for a more effective clean.

Step 2: Pressure Washing

After clearing the debris, apply pressure washing. This can be done using a pressure washer. Be sure to hold the nozzle at least 15 centimetres from the concrete surface to avoid causing damage.

Safety Tip: Always wear protective equipment when using a pressure washer. Check the WorkSafe Victoria’s guidelines for more information on safety equipment.

Step 3: Using a Cleaning Solution

Next, apply a concrete cleaning solution. These are typically available from home improvement stores, or you can make one at home by mixing one part white vinegar with one part water.

Step 4: Scrubbing

Using a long-handled brush, scrub the concrete surface vigorously. This will help to break down any stubborn stains or marks.

Step 5: Rinse and Dry

Finally, rinse off the cleaning solution using the pressure washer, and allow the concrete to air dry.

Regular cleaning can go a long way in maintaining the look and longevity of your exposed aggregate concrete. The Department of Industry, Science, Energy and Resources reports that proper care and maintenance can extend the life of concrete structures by up to 15%.

Step 6: Sealing the Concrete

After the concrete has dried completely, consider applying a high-quality concrete sealer. Sealers will enhance the appearance of the aggregate and help protect the surface from staining and weathering.

Pro Tip: Make sure to follow the manufacturer’s instructions when applying the sealer.

Step 7: Regular Maintenance

The key to maintaining the aesthetics and durability of exposed aggregate concrete lies in regular upkeep. Sweep or hose off the concrete periodically to prevent accumulation of debris.

Remember: Reactive maintenance is more costly than proactive maintenance. According to insightful research conducted by the Australian Government’s Department of Infrastructure, Transport, Regional Development and Communications, every dollar spent today on preventative maintenance could help you pocket up to five dollars that would otherwise go towards future repair costs. It’s a powerful reminder that a little effort now can save you a lot of hassle and expense down the track.

Step 8: Dealing with Stubborn Stains

Cleaning regular debris and dirt will keep your exposed aggregate concrete looking great most of the time. But what happens when you encounter a stubborn stain that just won’t go away? This is where a specialised cleaning solution comes in handy.

Remember: Always test the cleaning solution on a small, inconspicuous area first to ensure it does not discolour your concrete.

Step 9: Addressing Surface Damage

Over time, your exposed aggregate concrete may show signs of surface damage like cracks or chipping. Don’t panic – these are often superficial and can be easily fixed. We recommend using a high-quality concrete repair product to fill in the cracks or chips.

Step 10: Prevention is Better than Cure

While cleaning is essential, you can reduce the amount of cleaning needed by taking preventative measures. For example, consider installing a border or edging around your exposed aggregate concrete to prevent grass and weeds from creeping onto the surface. Regularly trimming plants and trees near your concrete will reduce the amount of leaves and debris that land on it.

Moreover, try to address spills as soon as they occur. This can significantly reduce the chance of stains setting in, making your cleaning tasks easier in the long run.

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Exploring the Science of Concrete

Understanding a bit of the science behind concrete can also be incredibly helpful in maintaining it. According to the Australian Government’s Geoscience Australia, the basic ingredients in concrete are cement, sand, and aggregate (usually gravel or crushed rock). The cement and water form a paste that binds together the sand and aggregate, hardening into a sturdy, stone-like material. This is why keeping moisture levels in check and preventing erosion is crucial in maintaining the integrity of your concrete.

Reach Out for Professional Help

Sometimes, despite your best efforts, you might need professional help. Whether you’re dealing with persistent stains, severe surface damage, or just need some expert advice, don’t hesitate to call on the professionals. Skyco Group has a team of experienced professionals ready to assist you with all your exposed aggregate concrete needs. We not only provide high-quality products but also offer consultation and services to ensure you’re getting the best out of your concrete installations. Book your free onsite quote.


Clean, well-maintained exposed aggregate concrete not only enhances the aesthetics of your property but also increases its value. The process might seem a bit daunting, but with the right tools and techniques, it can be fairly straightforward. Remember, the Skyco Group is always here to assist you.

Frequently Asked Questions

Exposed aggregate concrete is a decorative style of concrete suitable for use as a driveway, pathway or patio.

Regular cleaning is advised, ideally once every six months.

Yes, a homemade solution of white vinegar and water can be effective.

Yes, if done improperly. Always maintain a safe distance and use the right pressure setting.

Safety goggles, gloves, and sturdy footwear are recommended.

Author : SEO Pir2

Published Date : June, 28 2023

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