House Washing
What Is House Washing and Why Do Melbourne Homes Need It?
House washing is a professional exterior cleaning service designed to remove mould, dirt, cobwebs, and stains from the outside of your home.
In Melbourne’s changing climate, moisture and pollution can cause unsightly black and green mould to build up on weatherboards, render, brick, and cladding.
Using a combination of soft washing (low pressure), we safely restore your home's exterior without damaging paint or surfaces.
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We simply apply the cleaning solution and let it dwell for a short period of time (typically 10-20 minutes) then hose it off with water low pressure.
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Regular house washing improves street appeal, protects your paintwork, and is ideal before selling or renting your property.
At Blue Water Pressure Washing, we specialise in house washing across Melbourne suburbs — offering reliable, fully insured service for homeowners who care about clean, well-maintained homes.
What is Softwashing?
Softwashing is a gentle, low-pressure cleaning method that uses specialised cleaning solutions to safely remove dirt, mold, mildew, algae, and other contaminants from exterior surfaces.
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Unlike traditional pressure washing, which relies on high-pressure water that can damage delicate surfaces, softwashing relies on a combination of detergents and low water pressure to thoroughly clean and restore your home’s exterior without causing harm.
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Softwashing is ideal for cleaning roofs, siding, fences, decks, and other surfaces that require careful treatment to avoid damage.
It effectively kills mold and algae at the root, helping to prevent their quick return and prolonging the life and appearance of your property.
How Much Does it Cost in Melbourne ?
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House Washing Soft Washing Price List
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Small house: $550 – $600
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Medium house (typically single story: $600 – $700
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Large house (typically double story): $700 – $850
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Extra-large house): $850+
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All services include external mould and mildew treatment, cobweb and spider treatment
Note: Prices may vary based on property condition, location, and specific requirements.​
Why Render/Weatherbord/Cladding Should Be Softwashed,
Not Pressure Washed
Rendered, Weatherboard and Cladding surfaces should always be softwashed—not pressure washed—to avoid costly damage. High-pressure cleaning can crack or strip render, causing water ingress, surface erosion, and long-term structural issues. Softwashing is a safer alternative that uses low-pressure water combined with specialised cleaning solutions to gently remove mould, mildew, and dirt without damaging the surface. Whether it’s acrylic, cement, or painted render, softwashing ensures a thorough, lasting clean while preserving the integrity and finish of your home’s exterior.
Protect your render—choose softwashing for a safe and effective clean in Melbourne.
Water Tank/Drainage Pipe Disconnection Before Softwashing
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Before starting any softwashing service, it's essential to disconnect rainwater tanks and isolate drainage pipes to prevent cleaning chemicals from entering your water supply or garden.
As part of our professional house washing process, we ensure that all water tanks are safely disconnected, and downpipes are diverted or blocked off during the clean. This protects your water sources and ensures a safe and effective softwash every time.
Types of Mould That Grow on Houses in Melbourne
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Melbourne’s damp winters, shaded areas, and changing weather conditions create the perfect environment for mould and mildew to grow on exterior surfaces. Without proper cleaning, mould can cause staining, health issues, and long-term damage to your home’s exterior.
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Here are the most common types of mould found on Melbourne homes:
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Black Mould (Aspergillus / Stachybotrys):
Often seen on rendered walls, painted surfaces, and eaves. Appears as dark patches or streaks, and thrives in damp, shaded areas. -
Green Mould (Cladosporium / Algae):
Frequently found on weatherboards, fences, brickwork, and driveways. Gives surfaces a green, slimy appearance and is common after rainfall. -
White Mould (Efflorescence):
Appears as a chalky, white powder on brick or concrete. Often mistaken for salt buildup but caused by trapped moisture and mould spores. -
Pink or Orange Mould (Serratia):
Occasionally found on window sills or damp siding, especially in areas with little sun exposure.​
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Softwashing is the safest and most effective way to remove all types of mould from your home's exterior without causing damage. Regular house washing helps prevent mould regrowth and protects your home’s appearance and value.