How to Fix Exposed Aggregate Concrete

Got patchy, cracked or worn-out concrete? You’re not alone — exposed aggregate surfaces can develop issues over time, but most can be fixed.

With 15+ years experience and the highest customer satisfaction rate, we know what works (and what doesn’t) when it comes to restoring exposed aggregate in Perth.

Common Problems with Exposed Aggregate Concrete

Exposed aggregate is durable, but it’s not immune to damage — especially if it wasn’t sealed properly or has been exposed to years of wear and tear.

Here’s what we see most often:

• Cracks – from ground movement, shrinkage, or heavy loads

• Patchy exposure – from poor finishing or uneven washing

• Loose stones – caused by weather, impact, or bad bonding

• Discolouration – oil stains, UV fading or chemical damage

• Rough or uneven texture – often due to bad pouring or curing

Can You Fix Exposed Aggregate Concrete?

Yes — most exposed aggregate problems can be fixed, but the method depends on the issue.

• Small cracks? Use a flexible concrete filler or epoxy.

• Patchy finish? A micro-topping or decorative overlay can help.

• Surface wear or loose stones? You may need to re-grind and reseal.

• Widespread damage? It’s best to get professional help.

The key is choosing the right fix — and making sure it blends with the rest of the surface.

DIY Fixes for Minor Issues

If you’re dealing with small flaws, here are some options you can try yourself.

Crack Repair

• Clean out the crack thoroughly (dust and debris can stop the sealant bonding)

• Use a flexible concrete crack filler or epoxy

• Tool the finish to match the surrounding area as best you can

Fixing Patchy Exposure

• Use a decorative overlay or micro-topping with aggregate blended in

• Apply carefully and feather the edges to avoid hard joins

• For best results, use a surface retarder to re-expose the aggregate after the new layer sets

Resealing for a Fresh Finish

• Wash the concrete thoroughly — pressure washing helps, but don’t blast too close

• Apply a high-quality concrete sealer (penetrating or topical depending on the look you want)

• Reseal every 2–3 years to keep it protected from UV and water damage

When to Call a Professional

Some problems are best left to the pros — especially if:

• The cracks are wide or structural

• You need a large area patched or re-surfaced

• The colour match needs to be exact

• You’ve tried DIY repair but it didn’t hold

We don’t believe in cutting corners. When you call us, we’ll assess the surface, explain your options, and repair or resurface the area to suit your home and budget.

How to Prevent Future Damage

• Seal regularly – we recommend resealing every 2–3 years

• Avoid harsh chemicals – use pH-neutral cleaners where possible

• Watch for drainage – water pooling can lead to cracks or movement

• Use protective mats – especially under tyres or high-traffic zones

Simple maintenance now can save you costly repairs later.

Need It Fixed Properly?

We’ve repaired exposed aggregate driveways, paths and patios across Perth — from small cracks to full resurfacing. Get in touch with the DCWA team for advice or a quote.
We promise to arrive on time and never cut corners.

FAQs

Can I patch exposed aggregate concrete myself?
Yes — small patches can be done DIY, but matching colour and texture can be tricky without the right tools or experience.

Will the repair be noticeable?
Done properly, most fixes blend well. But there may be slight variation depending on age, wear, and existing finish.

Do I need to reseal after repairs?
Absolutely. Sealing protects the repair and ensures a consistent look.

How long will the fix last?
Most repairs last 5–10 years with proper sealing and care.