House washing is the process of cleaning a home's exterior walls, eaves, fascia, and soffits using low-pressure softwash methods that safely remove mould, algae, dirt, and salt deposits without damaging paint, render, or cladding. For homes along the NSW coast, regular house washing protects your biggest asset from the accelerated deterioration caused by salt air, humidity, and biological growth.
The exterior of your home is constantly exposed to the elements. Along the Central Coast, Sydney, and Newcastle, onshore winds carry salt aerosol that coats wall surfaces and draws moisture into render and paint systems. Left untreated, this leads to mould penetration, paint breakdown, and staining that becomes progressively harder to remove. Regular house washing prevents this cycle and keeps your home looking its best.
Surface Types We Wash
SOAKD washes every common residential exterior surface found across Sydney, the Central Coast, Newcastle, and the Hunter Valley:
- Rendered walls: Cement render, acrylic render, and textured coatings are cleaned using low-pressure softwash to remove algae, mould, and salt staining without damaging the render surface or breaking the protective seal.
- Weatherboard: Timber and composite weatherboard homes are softwashed to remove grime, mould, and oxidation. We clean between boards and around joins where biological growth accumulates.
- Fibre cement cladding: James Hardie and similar cladding products are cleaned using low-pressure methods that preserve the factory finish and prevent moisture penetration at joins and edges.
- Brick: Face brick and recycled brick exteriors are cleaned to remove mortar staining, efflorescence, algae, and atmospheric soiling. We calibrate pressure based on the brick type and mortar condition.
- Painted surfaces: All painted exterior walls are softwashed to prevent paint stripping. We match our cleaning solution to the paint type and condition, removing surface contamination while preserving the coating.
House Washing Cost Guide
House washing on the Central Coast, Sydney, and Newcastle typically falls within these ranges:
- Single-storey house: $450 to $700 depending on size and surface condition
- Two-storey house: $650 to $1,100 depending on access requirements and surface area
- Large or multi-level home: $900 to $2,500 depending on complexity and height access needs
Pricing varies based on the home's total wall area, number of surface types, level of staining, and access conditions. We provide free on-site quotes so you know the exact cost before any work begins.
How Often Should You Wash Your House?
Homeowners on the Central Coast, Sydney coastline, and Newcastle should wash their house exterior every 12 to 18 months to prevent cumulative salt and mould damage. Properties further inland or in sheltered positions can typically extend to every 2 to 3 years.
Signs your house needs washing include visible mould or green algae on walls, streaking below window sills and gutters, discolouration on the south or shaded side of the house, and a general dull or grimy appearance that hosing does not remove.
The SecureClean Process for House Washing
- Property Assessment: We inspect every exterior surface of your home, identify staining types and biological growth, assess paint and render condition, and determine the safest cleaning method for each material. Any existing damage is noted and photographed.
- Surface Protection: Windows, garden beds, outdoor furniture, fixtures, and any sensitive areas are covered and protected before cleaning begins. Downpipes and stormwater outlets are checked to manage water runoff.
- House Wash Treatment: Low-pressure softwash is applied systematically to all wall surfaces, working from top to bottom in controlled sections. Salt, mould, dirt, algae, and atmospheric deposits are removed without stripping paint or damaging coatings.
- Final Inspection: Complete walkthrough of your home checking every wall section, corner, and detail. Photo documentation provided showing the results. We recommend a maintenance schedule based on your home's location and coastal exposure.
House Washing in Newcastle and Lake Macquarie
Newcastle's housing stock is unusually mixed - Federation cottages in Cooks Hill and Hamilton, mid-century brick veneer through New Lambton and Lambton, modern coastal homes in Merewether and Bar Beach, and the heritage workers' terraces of Carrington and Wickham. Each requires a different exterior cleaning approach. Newcastle's combination of harbour-side humidity, salt aerosol from the open coast, and the soot deposits carried by westerly winds from the industrial corridor creates a faster contamination cycle than most Sydney suburbs experience.
SOAKD provides house washing across Newcastle and Lake Macquarie, including Newcastle CBD, Merewether, Hamilton, Mayfield, Cooks Hill, Lambton, Charlestown, Adamstown, Belmont, Warners Bay, Eleebana, and Swansea. Full lists on our Newcastle service area and Lake Macquarie service area.
What Newcastle Homes Need
- Heritage paint care: Cooks Hill and Hamilton's Federation-era painted weatherboards have older lead-pigment coatings on lower courses that need careful softwash treatment to clean without lifting paint or releasing residue. We assess paint condition before any work.
- Salt + soot compound: The combination of beachside salt and harbour soot creates a stubborn grey film that hosing cannot remove. Our softwash chemistry breaks both layers in a single pass.
- Render and rendering joins: Modern Newcastle homes with acrylic-rendered facades need low-pressure cleaning to preserve the seal at expansion joints and around windows. We do not pressure-wash render.
House Washing on the Central Coast
Central Coast homes face the most demanding exterior conditions in NSW. Direct ocean exposure in Terrigal, Avoca Beach, and Copacabana means salt deposits coat walls and windows daily. Inland suburbs like Matcham, Holgate, and Kincumber sit under heavy tree canopy that traps moisture against south-facing walls, leading to rapid mould and algae growth. Even sheltered suburbs around Gosford and Erina experience higher overnight humidity than equivalent inland addresses because of the Brisbane Water and Tuggerah Lakes systems.
SOAKD provides house washing across the entire Central Coast, including Gosford, Terrigal, Avoca Beach, Erina, Wamberal, Kincumber, Umina Beach, Bateau Bay, The Entrance, Copacabana, Empire Bay, and Wyong. Full list on our Central Coast service area.
What Central Coast Homes Need
- Salt-deposit removal: Beachfront homes within 1 km of the surf accumulate salt every onshore wind day. Annual softwash removes the deposit before it draws moisture into render and paint systems.
- Mould and algae prevention: Shaded south-facing walls in canopy-heavy suburbs need active treatment, not just rinsing. Our biodegradable solutions kill mould and algae at the cellular level so they do not return within weeks.
- Holiday rental presentation: Many Coast properties are short-term rentals where exterior presentation directly affects bookings. We schedule maintenance washes between peak seasons.
House Washing in Sydney and the Hunter Valley
SOAKD also services Sydney's North Shore, Upper North Shore, Northern Beaches, and Eastern Suburbs, plus the Hunter Valley region. Sydney service is concentrated on premium residential and commercial accounts where the brief justifies our coastal-NSW base.
For a free house washing assessment - or to book exterior house cleaning across Newcastle, the Central Coast, or surrounding regions - call 0418 167 798 or request a quote online. We respond within 24 hours.
