A homeowner-friendly guide to low-pressure exterior washing for painted walls, cladding, eaves, soffits and other delicate surfaces
Why house washing is different from driveway cleaning
House exteriors often include paint, cladding, window seals, vents, electrical fittings and joints that should not be attacked with the same pressure used on a concrete driveway. The process should be adjusted to the building materials.
How softwashing works
Softwashing applies cleaning solution at low pressure so chemistry can loosen and treat organic staining. The surface is then rinsed using controlled water pressure. This reduces reliance on aggressive mechanical force.
What does softwashing treat well?
It is particularly useful for common organic exterior staining such as algae, mildew and mould-like growth, along with general grime and cobwebs. Some non-organic stains may need separate treatment.
How are plants and surrounding surfaces protected?
Professional operators should inspect nearby gardens, painted finishes, metals and sensitive materials, use appropriate dilution, manage dwell time and rinse or protect surrounding areas as required.
Can every wall be softwashed?
Most exterior cleaning still requires a surface assessment. Old paint, damaged coatings, oxidised finishes, failing sealants or unknown materials can change the method and may require a test area first.
Sources & further reading
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