What is the difference between pressure washing and soft washing?

Pressure washing uses a high-pressure water jet to blast dirt, moss and grime off hard surfaces like concrete and pavers. Soft washing uses low pressure plus a cleaning solution to lift mould and algae off more delicate surfaces like render, painted timber or roof tiles without damaging them. The surface decides which one you use.

Can pressure washing damage my driveway?

On solid concrete and most pavers, correctly done pressure washing is safe. Damage happens when too much pressure is used on softer surfaces, aged mortar, painted areas or timber, which can etch concrete, strip jointing sand from between pavers or splinter timber. Matching the pressure and technique to the surface is the whole skill.

How do I get moss and mould off my driveway?

Melbourne's shaded, damp spots grow moss and black mould on concrete and pavers. A pressure clean lifts the surface layer; for stubborn or returning mould a treatment plus a soft wash kills the spores so it stays cleaner for longer. You can get a free online instant estimate by outlining your driveway at expanse.builders/pressure-washing.

Pressure washing vs soft washing: which does your driveway need?

The right method for each surface, what damages concrete and pavers, and how to shift Melbourne moss and mould.

Expanse Home Maintenance › Guides › Pressure washing vs soft washing

Quick answer Use pressure washing for hard surfaces (concrete driveways, paths, pavers, brick) and soft washing for delicate ones (render, painted timber, roof tiles). Matching the method to the surface is what avoids damage. Outline your driveway on the free online instant estimate to see your price in seconds.

"Pressure washing" gets used as a catch-all, but there are really two jobs here, and using the wrong one on the wrong surface is how driveways get etched and pavers lose their jointing sand. Here is the plain version.

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Which method for which surface

Surface	Method
Concrete driveway & paths	Pressure washing
Pavers & brick paving	Pressure washing (re-sand joints after)
Rendered walls	Soft washing
Painted timber, decking	Soft washing / low pressure
Roof tiles	Soft washing (high pressure cracks tiles)

When high pressure does damage

Etching concrete — too much pressure held too close leaves permanent stripes.
Stripping paver joints — blasting out the jointing sand lets pavers shift and weeds return.
Splintering timber — decks and painted timber need low pressure or they furr up.
Cracking roof tiles — roofs should almost always be soft washed, not blasted.

Melbourne moss and mould

Shaded, south-facing and tree-covered spots stay damp, and that is where green moss and black mould take hold on concrete and pavers. A pressure clean lifts the surface growth straight away. For mould that keeps coming back, a treatment plus a soft wash kills the spores so the surface stays cleaner for longer, rather than going green again in a couple of months.

DIY hire or a pro?

A hired domestic washer will handle a small, lightly-dirtied path. For a full driveway, heavy moss, or any render and roof work, a pro brings commercial pressure, the right tips, surface cleaners that leave an even finish (no stripes), and the judgement to soft wash what should not be blasted. It is also a lot less of your weekend.

Want it done properly the first time?

We match the method to the surface, lift the moss and grime, and leave an even finish. Free online instant estimate first.

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