Most people don’t realise how dirty the exterior of their home has gotten until they see it next to a freshly cleaned wall. It happens gradually — a bit of mould here, some dust and pollution residue there, algae creeping up from the garden bed — and before long the whole house just looks dull and tired.
High-pressure exterior washing is one of the most effective ways to bring a property back to life. Done properly, it can make a house look years younger in a single visit.
The Central Coast climate is tough on building exteriors. Salt air from the ocean carries fine deposits that settle on walls and slowly break down paint and render over time. The humidity that rolls in off the lakes and coast creates ideal conditions for mould and mildew to grow — especially on south and east-facing walls that don’t get consistent sun.
Properties near Terrigal, Wamberal, and other beachside suburbs tend to show salt and algae build-up faster than inland areas. But even properties around Gosford, Wyong, and the lake suburbs deal with significant mould and grime accumulation over a typical year.
Regular exterior washing protects the surface of your home, not just the appearance of it.
We wash a wide range of exterior surfaces on Central Coast homes and commercial properties:
We always assess the surface condition and paint adhesion before starting. If there’s peeling or flaking paint, we’ll let you know before we touch it — high pressure on compromised paint can make the situation worse, not better.
This comes up a lot and it’s worth explaining clearly.
High-pressure washing uses the force of water to physically remove dirt, mould, and grime from a surface. It’s fast and effective on hard, durable surfaces like concrete, brick, and Colorbond.
Soft washing uses lower water pressure combined with a biodegradable mould killer detergent to break down and kill organic growth — mould, algae, lichen — before rinsing it away gently. It’s the right method for render, weatherboard, painted surfaces, and anything where high pressure could cause damage.
Most exterior washing jobs need a combination of both depending on which surfaces are involved. We use whichever method is right for each part of the job — not just the one we’ve already set up.
Get in touch for a free quote. We’ll ask about the size of the property, the wall materials, and the general condition. Single storey homes are straightforward. Two storey homes may require extension lances or additional setup — we’ll factor that in at quote stage.
On the day we do a full walk around before starting — checking surface condition, paint adhesion, and any areas that need special care. We pre-treat mould and organic growth where needed, then work methodically around the property. We check windows and door seals before we start to make sure water goes where we want it.
Most single storey homes take two to four hours. Larger properties or homes with heavy staining take longer.
We carry out high-pressure exterior washing across the full Central Coast region including:
Terrigal, Avoca Beach, Wamberal, MacMasters Beach, Gosford, Point Clare, Erina, Springfield, Kincumber, Saratoga, Ettalong Beach, Umina Beach, Woy Woy, Tuggerah, Wyong, Hamlyn Terrace, Lake Haven, Toukley, The Entrance, Bateau Bay, Shelly Beach, and surrounding areas.
Not on the list? Get in touch — we cover more of the Coast than most.
Most single storey residential exterior washes on the Central Coast come in between $350 and $450 depending on the size of the home, wall materials, and level of soiling. Two storey homes sit higher due to the additional time and setup involved.
Bundling an exterior wash with a driveway, patio, or pathway clean on the same visit is the most cost-effective option. Get in touch and we’ll put together a combined quote.
We price upfront. No changes on the day.
If you’re planning to repaint the exterior of your home, a high-pressure wash first is not optional — it’s the right way to prepare the surface. Paint applied over mould, salt deposits, or a layer of grime won’t adhere properly and won’t last as long as it should.
Most painters will either charge to wash the surface themselves or ask you to have it done beforehand. Either way, having it professionally cleaned before any painting work starts gives the new paint the best possible surface to bond to.
We work alongside a number of painters and building trades across the Central Coast — it’s a job we do regularly as part of pre-paint preparation.
Not if it's done correctly. Render needs soft washing — lower pressure with detergent — rather than the full force used on concrete. We've cleaned render on hundreds of Central Coast homes without causing damage. If render is already cracked or compromised, we'll point that out before we start.
Yes, we use the correct soft-washing equipment powered by a 240v battery to be able to clean up to 3 storeys high.
We check all window seals and door frames before starting and avoid directing pressure into any gaps or openings. For weatherboard homes we use low pressure to avoid driving water behind the boards. If there are existing gaps or failed seals, we'll flag them.
Most surfaces need at least 24 to 48 hours to dry fully before painting, longer in cooler or humid conditions. Your painter will advise on timing — we just make sure the surface is clean and ready.
Once a year is a good baseline for most Central Coast properties. Homes close to the beach or in heavily shaded areas may benefit from more frequent cleaning to manage salt and mould build-up. Regular washing also makes each clean faster and cheaper than letting years of grime accumulate.
Get in touch with Coastal Cleans Cleaning Co. for a free quote on high-pressure exterior washing anywhere on the Central Coast. We usually respond same day.
