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Australians love their decks and outdoor living spaces – it serves many purposes. It can be a place to relax and take in the sun and also a place to entertain family and friends and create lifelong memories, right? However, ugly deck stains, for example, ruin this vibe.

Over time your deck will be exposed to harsh weather, frequent use, and the inevitable spillage of food and drinks which can lead to the accumulation of stubborn stains that detract from your deck’s beauty, charm and functionality.

Fortunately, this can easily be fixed with pressure cleaning! This powerful cleaning solution can erase years of wear and tear, restoring your deck to its original condition. Together, let’s explore how pressure washing can address common deck stains, including dirt and grime, algae and moss, rust, oil and grease, and water stains.

What Deck Stains Can Be Removed With Pressure Cleaning?

1. Dirt & Grime

Dirt and grime accumulate slowly, making it almost unnoticeable until your deck’s original colour is lost to a dull sheen. This doesn’t just affect the visual appeal of your deck but it can also degrade the wood over time by trapping moisture against the surface, leading to rot and decay.

Regular deck pressure cleaning can extend the life of your deck by preventing the buildup of these destructive agents. Pressure cleaning, with its ability to penetrate the deepest grooves, can restore your deck to its former glory, making dirt and grime a thing of the past.

2. Algae & Moss

Algae and moss thrive in damp, shaded areas, making decks a prime target for these growths. Not only are they unsightly, but they can also create a dangerously slippery surface, posing a safety risk to your family and friends.

Pressure washing, when done correctly, eradicates these growths. The key is using the right amount of pressure and a biodegradable cleaning solution that targets organic growth without harming the environment or damaging the wood. At The Jet Co Pressure Cleaning Sydney, we only utilise eco-friendly chemicals so you can be sure our solutions are safe.

3. Rust Stains

Rust stains can occur from metal furniture, fixtures, or even from the minerals in hard water. These reddish-brown streaks are not just an eyesore but they can be extremely challenging to remove.

From our experience and expertise, we recommend using a specialised pressure washing attachment and a gentle, yet effective, cleaning solution to lift these stains off your deck.

4. Oil & Grease Stains

From spilled food to drippings from the grill, oil and grease stains are common and tough stains to remove. These stains penetrate deep into the wood, making them resistant to standard cleaning methods.

Pressure cleaning oil stains involves using a high pressure washer combined with a degreaser, can break down and lift these oily residues. It’s a powerful method that can save you a lot of time and money from resorting to sanding or replacing the stained boards entirely.

5. Water Stains

Water stains often occur as discoloured patches that dull the wood’s natural beauty. These stains can indicate improper drainage or the need for sealing, as water penetrates and alters the wood’s appearance.

A thorough pressure wash can remove these stains, but it’s also a wake-up call to address any underlying issues. Following up with proper sealing ensures that water stains won’t quickly return, offering you long-term protection against the elements.

FAQ On Deck Pressure Cleaning

1. Is pressure cleaning safe for all types of deck materials?

Pressure cleaning can be safely used on a variety of deck materials, including wood, composite, and concrete. However, the key is to use the correct pressure setting and nozzle to avoid damage. Soft woods like pine require a lower pressure to prevent etching or stripping of the wood fibres, while harder surfaces may withstand higher pressures. Always start with a lower pressure and test a small, inconspicuous area first. If you’re unsure and are worried about causing damage to your deck, it’s best you contact professionals like The Jet Co Pressure Cleaning Sydney.

2. How often should I pressure wash my deck?

The frequency of pressure cleaning your deck depends on several factors, including the deck’s exposure to the elements, foot traffic, and the type of material. Generally, it’s recommended to pressure clean your deck at least once a year to remove dirt, grime, and other build-ups. However, decks in areas with high humidity may require more frequent cleaning to prevent mould and algae growth.

3. Can pressure cleaning remove all types of deck stains?

Pressure cleaning is highly effective at removing a wide range of stains, including dirt, algae, moss, and mildew. It can also tackle harder-to-remove substances like oil, grease, and some types of paint. However, the success rate may vary based on the stain’s age and depth. Pre-treatment with a specialised cleaning solution may be necessary for particularly stubborn stains.

4. Do I need to do anything to my deck after pressure cleaning it?

After pressure washing your deck, it’s advisable to apply a sealant or stain to protect the wood from future moisture and UV damage. This not only extends the life of your deck but also enhances its appearance. Wait for the deck to dry completely before applying any treatments, typically 24-48 hours. Regular maintenance, including yearly pressure cleaning and resealing every 2-3 years, will keep your deck looking its best.


In conclusion, maintaining the beauty and longevity of your deck is not just about aesthetics; it’s about preserving the space where memories are made. Pressure cleaning is capable of eradicating stubborn stains that detract from your deck’s charm. Whether it’s combating the pervasive spread of algae and moss, addressing unsightly dirt and grime, removing hazardous oil and grease spills, or reviving areas marred by water and rust stains, pressure cleaning offers a solution that is both effective and efficient.

By incorporating regular pressure cleaning into your maintenance routine, you’re not only enhancing the visual appeal of your outdoor living space but also protecting your investment for the future. And with the FAQs addressed, we hope to have provided you with valuable insights to make informed decisions about caring for your deck.

Get a Free, Instant Quote for Deck Cleaning Today

The Jet Co Pressure Cleaning Sydney are specialists in restoring decks and making them look brand new again. If you’re looking for experienced professionals to pressure clean your deck, contact us today!

Call us on 02 9072 1991 or enquire online to get your free quote!

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