Understanding the Best Cleaning Method for Your Property
When it comes to cleaning the exterior of your home or business, many people assume pressure cleaning is the answer. While pressure cleaning is highly effective for many surfaces, it's not always the safest or most suitable option.
At Perth Softwash, we use both soft washing and pressure cleaning, selecting the right method based on the surface being cleaned and the type of contamination present. Understanding the difference can help you protect your property while achieving the best possible results.
What is Soft Washing?
Soft washing is a low-pressure cleaning method that uses specially formulated cleaning solutions to break down and remove mould, mildew, algae, bacteria, lichen, dirt and other organic contaminants.
Unlike pressure cleaning, soft washing relies on the cleaning solution to do the hard work rather than high water pressure. This makes it ideal for delicate or painted surfaces that could be damaged by excessive pressure.
Soft washing is commonly used on:
- Exterior house walls
- Painted surfaces
- Render
- Roofs
- Gutters
- Fences
- Eaves
- Solar panels
- Outdoor furniture
- Shade sails
By treating the source of mould and algae growth, soft washing not only cleans the surface but also helps slow the return of biological growth.
What is Pressure Cleaning?
Pressure cleaning uses high-pressure water to remove dirt, grime, mud, moss, stains and other contaminants from hard surfaces.
Rather than relying on cleaning chemicals, pressure cleaning uses the force of water to lift stubborn dirt and restore heavily soiled areas.
Pressure cleaning is ideal for durable surfaces such as:
- Concrete driveways
- Pathways
- Paving
- Exposed aggregate
- Car parks
- Warehouse floors
- Factory yards
- Retaining walls
- Brickwork
- Commercial hardstand areas
Professional pressure cleaning equipment allows the pressure to be adjusted to suit different surfaces, helping achieve excellent cleaning results while minimising the risk of damage.
Which Cleaning Method is Best?
There isn't a one-size-fits-all answer.
The best cleaning method depends on:
- The type of surface
- The amount of dirt or staining
- Whether mould or algae is present
- The age and condition of the surface
- The desired finish
In many cases, both methods are used on the same property. For example, a home may be soft washed to clean the exterior walls while the driveway and pathways are professionally pressure cleaned.
Soft Washing vs Pressure Cleaning
| Soft Washing | Pressure Cleaning |
|---|---|
| Low-pressure cleaning | High-pressure water cleaning |
| Removes mould, algae and bacteria | Removes dirt, mud and heavy surface build-up |
| Safe for delicate surfaces | Best for durable hard surfaces |
| Longer-lasting results by treating organic growth | Immediate removal of surface contaminants |
| Ideal for painted surfaces and roofs | Ideal for concrete, paving and brickwork |
Can Pressure Cleaning Damage Surfaces?
Yes—when used incorrectly.
Using excessive pressure on painted surfaces, render, weatherboards, roofs or older materials can cause damage, including:
- Peeling paint
- Surface etching
- Water intrusion
- Damaged mortar
- Broken roof tiles
- Premature wear
That's why it's important to choose the correct cleaning method for each surface rather than assuming more pressure delivers better results.