Deck Cleaning Wellington | Timber & Composite Deck Cleaning | Metro Water Blasting
Professional deck cleaning Wellington
Residential & Commercial · Wellington

Professional Deck Cleaning in Wellington

Expert low-pressure timber and composite deck cleaning across all Wellington suburbs, Lower Hutt, Upper Hutt, Porirua and the Kāpiti Coast. Eco-friendly, fully insured and available 7 days — free no-obligation quote in minutes.

5.0 ★
Google Rating
10,000+
Decks Cleaned
$
Competitive
Eco Friendly
Wellington's Deck Cleaning Specialists

Wellington's Trusted Deck Cleaning Experts

Metro Water Blasting provides professional deck cleaning across all Wellington suburbs and the wider region at competitive rates. Our local team uses a certified low-pressure system to restore timber and composite decks safely and effectively. From Karori and Kelburn in the west, Island Bay in the south and Khandallah in the north, through to Lower Hutt, Upper Hutt, Porirua and the Kāpiti Coast — we cover the entire Wellington region 7 days a week.

Wellington's notoriously wet and windy climate is one of the harshest environments for outdoor timber in New Zealand. Persistent southerly winds drive moisture into deck surfaces year-round, while Cook Strait salt air accelerates surface degradation. Decks in shaded hill suburbs like Karori, Brooklyn and Mornington are especially prone to heavy mould and algae growth. Our professional deck cleaning service removes years of organic buildup in a single visit, restoring your deck's natural colour and preparing it for staining or sealing.

Fully Insured
Low-Pressure Certified
Available 7 Days
Eco-Friendly Products
Wellington Region Wide
Low pressure deck cleaning Wellington timber deck
Wellington's No.1 Method

Low Pressure Deck Cleaning Wellington

Wellington's southerly storms and persistent wind-driven rain make deck maintenance more critical — and more challenging — than almost anywhere else in New Zealand. Mould, algae and black lichen take hold fast on Wellington decks, especially on south-facing and shaded properties in suburbs like Brooklyn, Mornington and Eastbourne. Our low-pressure soft-wash technique removes all organic growth safely and effectively without splintering timber or voiding composite warranties.

Our experienced Wellington team assesses each deck individually, selecting the right chemical solution and pressure calibration for the specific timber species, surface condition and exposure level. Whether it's a character villa deck in Thorndon, a hillside property in Karori or a waterfront home in Eastbourne, we have the expertise to restore it.

Safe low-pressure system — no splintering or surface damage
Removes mould, algae, lichen and wind-driven grime
Eco-friendly — safe for Wellington gardens, pets and the harbour
Restores natural timber colour — ideal pre-stain or pre-seal prep
All Wellington suburbs, Hutt Valley, Porirua & Kāpiti Coast covered
All Deck Types

We Clean Every Wellington Deck Type

Whether your Wellington deck is a heritage villa rimu deck, treated pine, modern composite or hardwood — Metro has the right technique for Wellington's conditions.

Timber Decks

Pine, rimu, kwila and native timber decks. Our low-pressure method cleans without raising the grain or causing wind and moisture damage — essential in Wellington's climate.

Composite Decks

Composite and PVC decking is increasingly popular in Wellington new builds. We're experienced with all major composite brands and guarantee no surface damage.

Hardwood & Heritage Decks

Wellington's character homes often feature original rimu and hardwood decking. We treat heritage timber with special care — restoring without damaging irreplaceable wood.

Wind & Weather-Exposed Decks

Wellington's exposed decks face unique challenges — salt-laden southerlies and constant moisture. We use solutions specifically suited to wind-weathered and salt-affected timber.

Commercial Decking

Wellington's cafes, bars and waterfront businesses trust Metro for regular deck maintenance that keeps outdoor areas safe, clean and looking their best.

Hillside & Raised Decks

Our height-certified Wellington crew safely cleans raised and hillside decks of all sizes — ideal for the city's hilly suburbs like Karori, Brooklyn and Khandallah.

Metro Water Blasting Wellington deck cleaning crew
Why Choose Metro Wellington

Why Wellington Homeowners Choose Metro

From Karori to the Kāpiti Coast, Wellington homeowners and property managers trust Metro for deck cleaning that stands up to Wellington's toughest conditions.

10+ Years Wellington Experience

We've cleaned thousands of Wellington decks and know every suburb, every wind direction and every timber type the region presents.

Fully Insured & Certified

Height certified and fully insured Wellington crew. Professional technicians only — no sub-contractors on your property.

Eco-Friendly Products

Biodegradable solutions safe for Wellington gardens, pets, children and the Wellington Harbour environment.

Available 7 Days

We work around your schedule, including weekends across Wellington, the Hutt Valley, Porirua and the Kāpiti Coast.

5-Star Rated

Over 200 verified Google reviews. Consistently Wellington's most trusted deck cleaning service.

Free No-Obligation Quotes

Fast, free and zero pressure. Get your Wellington deck cleaning quote in minutes.

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Customer Reviews

What Our Wellington Customers Say

Don't just take our word for it. Here is what Wellington homeowners from Karori, Johnsonville, Lower Hutt and beyond say after booking Metro for deck cleaning.

Wellington's Deck Cleaning Experts

Ready to Restore Your Wellington Deck?

Professional low-pressure deck cleaning across Wellington, Lower Hutt, Upper Hutt, Porirua and the Kāpiti Coast. Eco-friendly, fully insured and available 7 days — free no-obligation quote in minutes.

Free No-Obligation Quote

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Deck Cleaning Services NZ FAQ
Deck Cleaning Wellington

Frequently Asked Questions

Everything you need to know about professional deck cleaning and oiling in Wellington, answered honestly.

Professional deck cleaning removes built-up dirt, mould, mildew, algae, tannin stains, and greyness from timber and composite deck surfaces. We use a controlled low-pressure soft wash technique combined with specialist deck cleaning solutions that lift contaminants from the timber grain without raising the fibres or damaging the surface. The result is a clean, refreshed deck that is ready for oiling, staining, or simply enjoying again.
Wellington's strong winds, heavy rain, and salt air mean decks are constantly exposed to moisture, UV, and biological growth. Without regular cleaning, mould and algae make decks slippery and dangerous, while UV damage and moisture penetration cause the timber to grey, crack, and deteriorate prematurely. Regular cleaning and maintenance is the most cost-effective way to protect your investment and extend the life of your deck.
Timber decks should never be cleaned with high-pressure water blasting. The force can raise the grain, splinter the timber, drive moisture deep into the wood, and strip existing coatings. We use a low-pressure soft wash technique that is gentle on the timber while still removing contaminants effectively. For composite decking, pressure settings are adjusted accordingly as composites are generally more tolerant of higher pressure than natural timber.
We clean all common deck types found in Wellington homes including pine, kwila, hardwood, macrocarpa, cedar, and composite decking. Each timber type has different characteristics and responds differently to cleaning solutions and pressure, which is why our team assesses the deck surface before starting and tailors the approach accordingly. We also clean stairs, balustrades, and pergola structures as part of a full deck clean where required.
Yes, and a freshly cleaned deck is the ideal time to do it. Oiling after cleaning restores moisture to the timber, protects against UV damage and water penetration, and dramatically slows the return of mould and greying. Oil applied to a dirty deck sits on top of the contaminants rather than penetrating the timber, so cleaning first is essential for the oil to bond properly and last as long as possible. We can advise on suitable oil products for your specific timber type.
Most Wellington decks benefit from a professional clean once a year, ideally in spring before the outdoor entertaining season begins. Decks in shaded areas, near trees, or in high-humidity regions may need attention more frequently as mould and algae establish faster. If your deck is starting to look grey, feels slippery when wet, or has visible mould growth, it is time for a clean regardless of when you last had it done.
Yes. Our specialist deck cleaning solutions are formulated to target black mould, mildew, algae, and tannin staining that cause the dark discolouration common on older timber decks. Results depend on the severity and age of the staining and the condition of the timber, but in most cases we can achieve a significant improvement. We will give you an honest assessment of what to expect during your quote rather than overpromising.
Most residential deck cleans take between one and three hours depending on the size and condition of the deck. After cleaning, the deck needs to dry fully before oiling or staining, which typically takes 24 to 48 hours depending on the weather. We will give you a clear timeframe when we provide your quote so you can plan around it.
Yes. We use eco-friendly, biodegradable cleaning solutions and take precautions to protect surrounding plants and gardens during the clean. We pre-wet any nearby vegetation before applying cleaning solutions and rinse thoroughly afterward. If you have particularly sensitive plants or vegetable gardens close to the deck, let us know when you book and we will take extra care around those areas.
Pricing depends on the size of the deck, the timber type, the level of soiling, and whether oiling is included. We provide transparent, obligation-free quotes upfront so there are no surprises. We service properties across all areas of Wellington including Karori, Johnsonville, Miramar, Newtown, Petone, Lower Hutt, and the city centre. Get in touch for a free assessment and an accurate price for your specific deck.

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