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Concrete Cleaning & Sealing in Dunedin and Otago
SERVICING OAMARU, DUNEDIN TO MILTON & BEYOND
Professional Driveway, Patio & Path Cleaning That Actually Makes a Difference
Concrete is one of those surfaces that takes a beating quietly. Moss creeps in from the edges. Grime settles into the surface. Oil stains set hard. Before long, a driveway or patio that was once clean and solid-looking has turned grey, slippery, and tired. Most people assume that's just what concrete looks like over time — but it doesn't have to be.
At Blast Off Otago, we provide professional concrete cleaning in Dunedin and across the wider Otago region. Using specialist pressure cleaning equipment and surface treatments, we remove years of built-up dirt, moss, mould, lichen, and staining to reveal the fresh surface underneath. The before-and-after results consistently surprise our customers — and we've got the photos to prove it.
What We Clean
We work on all types of residential and light commercial concrete surfaces, including:
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Driveways — the most common surface we work on, and one that makes an immediate difference to your home's kerb appeal
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Patios and outdoor entertaining areas — remove slippery organic growth and restore a surface worth spending time on
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Concrete paths and walkways — safer underfoot and better looking
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Concrete steps — often neglected, and a real slip hazard when mossy
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Pavers and exposed aggregate — cleaned carefully to preserve texture and finish
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Garage floors and carports — interior and covered concrete can build up grime and oil staining over time
Whether it's a single path or an entire property's worth of concrete, we'll give you an honest assessment and a fair quote before we start.
Why Professional Concrete Cleaning Gets Better Results
A domestic pressure washer can shift surface dirt, but it rarely gets into the pores of the concrete where moss, mould spores, and organic matter actually live. That's why DIY cleaning tends to look good for a few weeks before the green creep returns.
Our professional concrete cleaning service in Dunedin uses commercial-grade equipment with the right pressure and flow rate for the surface, combined with specialist pre-treatments that break down and kill organic growth at the source. The result lasts significantly longer than a DIY rinse — and the finish is noticeably better.
We also treat for moss and mould rather than just removing what's visible. This slows regrowth considerably and means your surfaces stay cleaner for longer between services.
Concrete Sealing Otago — Protect What You've Just Cleaned
Cleaning your concrete makes a huge difference. Sealing it makes that difference last.
Once we've completed the clean, we highly recommend our concrete sealing service. A professional-grade sealant is applied evenly across the surface, creating a protective barrier that shields the concrete from the elements and everything Otago's climate can throw at it.
Our concrete sealing service delivers:
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Moisture protection — prevents water penetrating the surface and causing cracking or spalling over time
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Stain resistance — oil, grease, and everyday grime sit on the surface rather than soaking in
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Moss and mould suppression — organic growth struggles to take hold on a sealed surface, keeping your driveway cleaner for longer
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Improved appearance — sealant enhances the colour and finish of your concrete, giving it a clean, consistent look
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Easier future maintenance — sealed surfaces are far quicker to clean when it does come time for a refresh
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Extended lifespan — particularly valuable for driveways and paths that take heavy foot or vehicle traffic
Driveway sealing in Mosgiel and across Dunedin is one of our most popular add-on services, and for good reason. The investment pays for itself quickly in reduced cleaning frequency and better long-term condition of the surface.
Concrete & Driveway Cleaning - FAQ
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Dunedin concrete cleaning - Concrete driveway cleaning - Waterblasting concrete patios and paths
