Skyco Group has worked on countless exposed aggregate concrete projects across Melbourne, and one question we hear all the time is: “How do I clean and maintain it?” Exposed aggregate concrete is valued for its durability and striking aesthetics, but regular cleaning and sealing are key to preserving its beauty. In this guide, we’ll share a step-by-step method for cleaning exposed aggregate, practical tips, and expert advice. For professional help, call our team today on (03) 9993 7188.
Why Cleaning Exposed Aggregate Matters
Exposed aggregate offers a textured, natural look that enhances driveways, patios, and pool surrounds. Its durability makes it a popular choice across Melbourne, but without maintenance it can lose its shine and develop stains. The Cement Concrete & Aggregates Australia notes that proactive maintenance can extend the life of concrete surfaces by more than 15%.
Step-by-Step Guide to Cleaning Exposed Aggregate
Step 1: Initial Cleaning
Sweep away loose debris such as dirt, leaves, or twigs. A stiff-bristled outdoor broom works best. Regular sweeping prevents grime from building up.
Step 2: Pressure Washing
Use a pressure washer to remove dirt and moss. Hold the nozzle about 15 cm from the surface to avoid damage. Always wear protective gear, following WorkSafe Victoria guidelines on safety equipment.
Step 3: Apply a Cleaning Solution
For deeper cleaning, apply a commercial concrete cleaner from suppliers like Bunnings Warehouse or Mitre 10. Alternatively, mix one part white vinegar with one part water as an eco-friendly solution.
Step 4: Scrubbing
Scrub the surface using a long-handled stiff brush. This step helps loosen stubborn stains such as oil or algae.
Step 5: Rinse and Dry
Rinse thoroughly with clean water using a hose or pressure washer. Allow the surface to air dry naturally.
Step 6: Seal the Concrete
Once dry, apply a high-quality sealer from trusted brands like Dulux Australia or CSR. Sealers protect against stains, weather, and UV damage, while enhancing the colour of aggregates.
Step 7: Regular Maintenance
Routine upkeep is essential. Sweep regularly and rinse with water every few weeks. According to the Department of Infrastructure, preventative maintenance can save up to five times the cost of reactive repairs in the long run.
Step 8: Dealing with Stubborn Stains
For oil or rust stains, use a specialised concrete cleaner. Always test products on a small patch first. If stains persist, contact Skyco Group for professional cleaning services.
Step 9: Addressing Surface Damage
Over time, cracks or chips may appear. Use repair products available at Kennards Hire or Bunnings, or contact our concreting specialists to ensure repairs match the original finish.
Step 10: Prevention Tips
Preventative measures reduce cleaning frequency. Consider edging around driveways or patios to limit weed growth, trim nearby plants to reduce leaf litter, and clean up spills immediately to avoid permanent stains.
Exploring the Science of Concrete
According to Geoscience Australia, concrete is made of cement, sand, water, and aggregate. Over time, moisture and erosion can weaken surfaces, which is why cleaning and sealing are essential. Protecting exposed aggregate preserves both its structural strength and appearance.
When to Call the Professionals
While regular cleaning is manageable for most homeowners, stubborn stains or extensive damage often require professional intervention. At Skyco Group Melbourne, our team offers cleaning, sealing, and repair services that ensure your concrete looks its best and lasts for decades. Contact us at (03) 9993 7188 for a free onsite quote.
Frequently Asked Questions (FAQs)
Q: What is exposed aggregate concrete?
It’s a decorative concrete finish where the top layer of cement paste is removed to expose the underlying stones or pebbles.
Q: How often should I clean exposed aggregate?
At least once every six months, with resealing recommended every 2–3 years.
Q: Can I use household products?
Yes, vinegar and water solutions are effective for routine cleaning.
Q: Can pressure washing damage exposed aggregate?
Yes, if done improperly. Always use a safe pressure setting and maintain the correct distance.
Q: What safety equipment should I use?
Goggles, gloves, and sturdy footwear are recommended per WorkSafe Victoria standards.
Conclusion
Exposed aggregate concrete is a durable and stylish choice for Melbourne properties, but it requires regular cleaning and sealing to stay in peak condition. By following these steps—and engaging Skyco Group when professional help is needed—you’ll enjoy a surface that remains attractive and functional for decades. Call (03) 9993 7188 or book an onsite quote online today to keep your exposed aggregate looking its best.
