.png)
Deck & Fence Cleaning in Dunedin and Otago
Professional Timber Cleaning That Restores and Protects Your Outdoor Spaces
FENCE & DECK CLEANING SERVICES IN DUNEDIN
Timber is beautiful - right up until Otago's weather gets to it. A couple of seasons of rain, shade, and organic growth and even a well-built deck or solid timber fence can start to look neglected. The wood goes grey. Green algae spreads across the boards. Moss takes hold in the gaps. What was once a feature of your outdoor space starts to look like something you'd rather not look at.
The good news is that in most cases, the timber itself is fine. What you're seeing is surface contamination - and professional deck and fence cleaning removes it completely. At Blast Off Otago, we specialise in outdoor timber cleaning across Otago, bringing tired, weathered decks and fences back to a standard that's ready to be enjoyed again - or ready for a fresh coat of stain or sealant.
Deck Cleaning Dunedin — What's Actually Involved
Deck cleaning is one of those jobs that looks straightforward but has a lot of ways to go wrong. Too much pressure on weathered timber and you'll raise the grain, damage the surface, and leave it looking worse than before. Too little and you're just moving dirt around without actually cleaning anything.
We use controlled-pressure water blasting combined with specialist timber-safe pre-treatments to break down organic growth, lift embedded grime, and clean the full surface of the deck — between the boards, around the fixings, along the edges. The result is a deck that looks genuinely clean, not just rinsed.
Our deck cleaning service in Dunedin covers:
-
Hardwood decking - treated carefully to preserve the grain and natural character of the timber
-
Pine and treated timber decking - thorough cleaning without stripping protective treatment
-
Composite decking - cleaned at appropriate pressure to remove staining without surface damage
-
Deck steps and balustrades - every part of the structure, not just the flat surface
-
Pergolas and overhead timber structures - where accessible and safe to do so
-
Outdoor entertaining areas - full clean of decked areas, edges, and surrounding surfaces
If your deck is due for restaining or resealing, a professional clean first is essential. Stain applied over a contaminated surface won't penetrate properly, won't look as good, and won't last as long. Cleaning first means the stain does what it's supposed to do.
Timber Deck Restoration Dunedin - When It Needs More Than a Clean
Some decks have gone beyond ordinary maintenance. Boards that have turned deeply grey, surfaces with heavy lichen or mould penetration, or timber that hasn't been cleaned or treated in many years - these benefit from a more thorough restoration process rather than a standard clean.
Our timber deck restoration service in Dunedin involves a deeper treatment process: pre-soaking the surface with specialist cleaning compounds to draw out deeply embedded contamination, a thorough pressure wash, and a post-treatment to kill off any remaining biological material at the surface level. For decks being prepared for staining, we can also advise on the right products and preparation process for your specific timber type.
The transformation on older, neglected decks is often remarkable - and it's consistently one of the most satisfying results we deliver.
Fence & Deck Cleaning - FAQ
