Concrete surfaces take a beating in Wellington. Between the salty coastal breeze, wet winters, and constant foot traffic, your driveway or patio can quickly turn from clean and crisp to stained, slippery, and unsafe. Whether you live by the sea in Lyall Bay, in the flat zones of Kilbirnie, or near the airport in Miramar, keeping your concrete clean is key to both curb appeal and safety.

At Metro Water Blasting, we offer professional concrete cleaning services across Wellington, using pressure washing and treatment systems tailored for each surface and location. From oil stains to moss buildup, we get it clean — without damage.

👉 Book your clean: Concrete Cleaning Wellington

Why Concrete Gets So Dirty in Wellington

Wellington’s unique environment makes concrete one of the most abused surfaces:

  • Coastal salt spray accelerates grime and discolouration
  • Heavy rainfall and bush runoff grow moss and algae fast
  • Airport and road traffic drop oil, tyre residue, and soot on driveways
  • Wet shaded zones encourage moss, lichen, and slippery patches
  • Dust and airborne grit settle into textured surfaces and broom finishes

Unlike smooth indoor surfaces, concrete holds on to dirt. That means your front entry, car park, or garden path can become a safety hazard — or a major eyesore — in just a few months.

Suburb-Specific Concrete Challenges

✅ Lyall Bay & Moa Point

Salt spray from the ocean clings to every exposed surface. Driveways, patios, and walkways here often have white crusty buildup, rust stains, or green moss — especially on garage aprons and rear paths.

✅ Kilbirnie & Rongotai

These flatter, denser areas near the airport see lots of road dust and oily residue. Concrete near garages, driveways, or footpaths builds up black marks and becomes dull fast.

✅ Miramar & Maupuia

Exposed to wind and bush runoff — with concrete prone to mould, leaf stains, and mildew. Many properties here have split-level or elevated concrete decks and stairs needing careful washing.

✅ Newtown & Mount Cook

Urban grime and city dust settle on apartment paths, courtyard concrete, and low-use side driveways. Moss growth between expansion cuts and edges is common.

✅ Seatoun & Breaker Bay

Coastal extremes meet shade and bush — the perfect recipe for moss and black algae on concrete steps, retaining walls, and paths.

👉 Also read: Island Bay Driveway Cleaning – Before & After

What We Clean

We safely pressure wash all outdoor concrete surfaces, including:

  • Driveways (smooth, broom finish, exposed aggregate)
  • Paths & walkways
  • Steps and stairs
  • Courtyards and patios
  • Garage entries and parking pads
  • Retaining walls (smooth or block)
  • Pool surrounds (concrete, pavers, or stone)

We use a combo of surface cleaners, biodegradable pre-treatments, and soft edge rinsing to remove:

  • Black grime
  • Moss and green algae
  • Salt and mineral stains
  • Rust and tyre marks
  • Tree sap and leaf stains
  • Paint, clay, and lichen patches

👉 Learn more: Concrete Cleaning Wellington

Why Professional Cleaning Works Better

DIY often fails on concrete because:

  • Regular water pressure doesn’t cut through embedded dirt
  • Harsh cleaners damage sealed finishes or spread stains
  • Domestic washers leave stripes or missed patches
  • Mold spores and algae roots aren’t fully killed
  • Sloped paths can’t be safely rinsed without pooling or run-off issues

We bring industrial-grade flat-surface cleaners, pressure controllers, eco-safe detergents, and years of local experience — especially in difficult zones like Breaker Bay or Maupuia.

Before & After: Real Results

✅ Kilbirnie – A concrete driveway near the main road had heavy soot buildup and algae spread into the joints. We removed all buildup, treated the surface, and restored the original grey tone.

✅ Lyall Bay – A back patio stained from salt and organic growth was slippery and dark. After pre-treatment and controlled pressure washing, it looked brand new.

✅ Miramar – Concrete retaining walls and entry steps with green-black grime buildup were fully restored and safe to walk on again.

👉 Bonus blog: Spring Maintenance for Wellington Homes
👉 Also see: Deck Cleaning in Karori, Island Bay, Wilton

When Should You Clean Your Concrete?

  • Every 12–18 months is ideal for most homes
  • After storm seasons or autumn leaf drops
  • Before repainting driveways or sealing patios
  • When selling your home — boost curb appeal instantly
  • If moss or algae make surfaces slippery (especially for kids/elderly)

Bundle Concrete Cleaning With:

FAQs

Q: Will pressure washing damage my concrete?
No — we adjust pressure based on surface type. Flat surfaces are cleaned with surface cleaners to avoid streaking or gouging.

Q: Can you remove oil stains?
Yes, we treat and lift most oil-based stains, although very old or deep-set marks may leave some faint shadows.

Q: Do you clean concrete stairs and steep driveways?
Yes, we’re experienced in cleaning sloped and tiered concrete, especially in hill suburbs.

Q: How long does it take?
Most jobs are done in 1–2 hours depending on size. We’ll provide a time estimate when quoting.

Book Your Wellington Concrete Clean Today

Don’t let grime and moss ruin your curb appeal or create slip hazards around your home. Our Wellington-based team can professionally clean any concrete surface — and leave it looking as good as new.

📍 Based in Wellington
📞 Call 0800 997 997 – Lines open 24/7
📅 Free quote: Concrete Cleaning Wellington

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