Pressure washing, or power washing, cleans exterior surfaces with a high-pressure water spray. Pressure washing is used to remove many types of stains and buildup, such as paint, mould, mud, dust, dirt, and grime.​

Unlike soft washing, it relies more on high water pressures than adjunct chemical treatments. Surfaces we commonly pressure wash include driveways, garage floors and patios made of stone or concrete.

Soft washing cleans surfaces using a combination of water spray and chemicals.

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We typically use a combination of EBC (EnviroBioCleaner, which breaks down the molecular bonds that hold oil together), surfactants (which reduces the surface tension of liquids to help penetrate grime) and neutralisers (to minimise runoff from the chemicals, which can harm plants and animals).

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Specific chemical solutions such as SWAM (a biodegradable selective surfactant) and sodium hypochlorite (a powerful disinfectant) can help treat buildup caused by certain types of organic matter, such as mould, moss and bacteria.

Signs your house exterior needs professional cleaning include:

1. Surfaces that are stained and discoloured, or have visible dirt and grime If you notice rust stains, water streaks, or other discolouration on concrete, brick, or siding, or if you notice a buildup of dirt, dust and grime - it's time to wash it off. Likewise, if your gutters are clogged or have dark streaks (aka "tiger stripes"), it’s a sign they need cleaning.
   

2. Signs of mould, mildew or algae An unpleasant (often musty) smell around your house’s exterior can mean mould or mildew is growing somewhere, especially if you notice green or black streaks on your walls, roof, or fences. These not only look bad but can also cause damage over time and even be a safety hazard. If surfaces feel slick, it’s time for a deep clean
   

3. Cobwebs and insects If you see spider webs or other insect nests around windows, corners, or eaves, pressure washing can clear those out.
   

4. Peeling paint or preparing to repaint For homes with painted exteriors, peeling paint can indicate dirt or moisture buildup. Power washing before repainting is essential. Likewise, if you’re planning to sell your house or give it a new coat of paint, a thorough pressure wash will boost curb appeal and prep surfaces for new paint.

How frequent your property needs pressure and/or soft cleaning depends on your location and the level of dirt and pollutants your property accumulates. Generally, once a year is usually sufficient.