Pressure Cleaning & Exterior Washing

Driveways, concrete, paths, retaining walls and house exteriors, cleaned without damage. We set the pressure to suit each surface and use a low-pressure soft wash on render, eaves and other delicate areas. Local and family-owned, rated 5.0 on Google, with 15+ years of trade experience.
Call 0411 389 184

BEFORE · Growth along the retaining-wall caps

AFTER · The wall, refreshed

Owners of Illawarra Maintenance Group in company uniforms

Mathew & Kasey Chapman

Owners, Illawarra Maintenance Group

Get a Free Pressure-Cleaning Quote

Tell us what needs cleaning. We’ll contact you to talk through the job and arrange a free quote. Message and photos are optional.

    BEFORE

    AFTER

    Owners of Illawarra Maintenance Group in company uniforms

    Mathew & Kasey Chapman

    Owners, Illawarra Maintenance Group

    5.0 on GoogleFrom 62 local reviews

    Fully licensed and insured$20 million public liability, full workers cover

    15 and 20-year warrantiesProduct and workmanship, on gutter guard

    Local and family ownedMathew and Kasey, based in Shellharbour

    From Surface Build-Up to a Clearer Finish

    Growth and dark build-up had settled along the retaining-wall caps at this Mount Ousley property. We applied an SH treatment, then pressure cleaned the retaining walls, steps and concrete areas.

    Original project footage. Before and after views were taken from different positions and in different light.

    Recent Job: Mount Ousley Pressure Clean

    Location: Mount Ousley, NSW
    Service: Exterior pressure cleaning
    Completed: 19 October 2026

    A fresh finish across concrete, retaining walls and steps, from the garden access to the driveway.

    Clean retaining-wall blockwork after pressure cleaning in Mount Ousley
    Clean blockwork
    Concrete steps
    Driveway

    What to expect

    Our exterior pressure washing service is designed to remove built-up dirt, grime and surface staining while protecting the underlying materials. We assess surfaces first and apply appropriate cleaning methods to achieve effective results without unnecessary damage.
    1
    Assessment of surfaces and materials
    We inspect the areas to be cleaned, including driveways, paths, walls or other exterior surfaces. This helps determine the correct pressure and cleaning approach for each surface.
    2
    Controlled pressure washing
    Pressure levels are adjusted to suit the material being cleaned. This allows us to remove grime and build-up without damaging surfaces or finishes.
    3
    Care around surrounding areas
    We take care to protect nearby landscaping, gutters, windows and exterior fittings during cleaning to minimise disruption.
    4
    Cleaner, safer exterior spaces
    Once complete, surfaces are visibly cleaner and free from slippery build-up, helping improve both appearance and safety.
    Worker in gumboots pressure cleaning paving

    Effective exterior cleaning without surface damage

    Exterior surfaces are constantly exposed to the elements, leading to a gradual build-up of dirt, grime and environmental residue. Over time, this build-up can make driveways, paths and walls look tired and may also create slippery or unsafe surfaces. Illawarra Maintenance Group provides professional exterior pressure washing services to restore cleanliness while protecting surface integrity.

    Our approach begins with assessing the surface material and condition. Different materials respond differently to pressure washing, and excessive pressure can cause damage if used incorrectly. By tailoring pressure levels and cleaning techniques, we are able to remove surface build-up without compromising the underlying material.

    Exterior pressure washing can significantly improve the appearance of a property, particularly in high-traffic areas such as driveways and walkways. It is also an effective way to reduce slippery residue that can develop over time, helping improve safety around the home.

    Practical Pressure Cleaning For Total Exterior Care

    This service is often combined with other exterior maintenance work such as roof washing, gutter cleaning or moss and mould treatment. Addressing multiple areas at once allows for a more consistent and refreshed overall appearance.

    As with all our services, we focus on practical outcomes rather than unnecessary cleaning. If pressure washing is unlikely to deliver meaningful benefit for a particular surface, we will advise accordingly. Our goal is to provide effective cleaning that suits the condition and needs of your property.

    See the before-and-after results from our Mount Ousley pressure-cleaning project, including concrete, retaining walls and steps.

    Pressure cleaning concrete paving

    Peace of mind

    Why homeowners choose Illawarra Maintenance Group

    5.0 stars on Google

    From 62 reviews. Read what local homeowners say about us.

    Read our reviews

    Fully licensed and insured

    $20 million public liability and full workers compensation cover, so you and your property are protected while we work.

    15 and 20-year warranties

    A 15-year product warranty and 20-year workmanship guarantee on every gutter guard we install. If our work lets you down, we come back and fix it.

    CSIRO tested gutter guard

    All of our gutter guard products are CSIRO tested and approved to all relevant Australian standards.

    Proper measure and quote

    We get on the roof, measure properly and give you a free written quote. No guesswork, no pressure.

    Local and owner-run

    Mathew and Kasey Chapman run every job from Shellharbour. You deal with the owners, not a call centre.

    Frequently Asked Questions

    Driveways, paths, pavers, pool surrounds, retaining walls, steps, brick and block walls, fences and house exteriors. Render, painted surfaces, eaves and weatherboards get a low-pressure soft wash instead of high pressure.

    Not with the right pressure and a surface cleaner, which spreads the spray evenly and avoids the striping and etching you get from a hand wand. We take extra care with older or soft pavers and exposed aggregate.

    Black mould and organic staining usually come off completely with a pre-treatment and wash. Oil and rust marks can be lightened a lot, but deep-set stains may not fully disappear. We’ll tell you what to expect before we start.

    Within about 45 minutes of Shellharbour, covering Wollongong, Shellharbour, Kiama and nearby suburbs. If you’re further out, ask — we can often combine it with a gutter guard job in your area.

    Yes. Exterior pressure washing is commonly combined with other exterior cleaning and maintenance services.

    Our Testimonials

    I highly recommend Mathew, the workmanship was exceptional, very professional and everything was left neat and tidy. He explained how he approached the job and found a problem with the back gutter which took longer than expected but stuck by his quote. He is an absolute professional and gentleman.

    Stephen James

    Matt did a great job cleaning our gutters and doing a full replacement of our gutter guards which had been installed incorrectly. He also treated the lichen on our roof and dealt with a wasp nest complementary. He was friendly, professional and really easy to deal with. We're really happy with the work he did.

    Lisa Francis

    I had been looking for a solution to birds gaining access to the inside of my roof from the gutters. After some messages and photos with Mathew we hashed out a solution and got a quote. Really great job done here and I would recommend Mathew if you have a similar issue with birds or leaves. He got his drone up and was able to really show me the awesome work he did.

    Ethan Jones

    We have just had our box gutter and gutters thoroughly cleaned by Matt. He also provided drone photos and detected a rusted hole and repaired it until we were able to call a roofer. The service was prompt and affordable. We would recommend their services.

    Valerie Sherrell

    I had the best experience. They are so professional, organised, honest and knowledgeable. Mathew did an incredible job with cleaning my gutters. Would definitely recommend.

    Noura

    Mathew was a pleasure to deal with. Great communication, super professional and we are really happy with our gutter guards. Highly recommend.

    Keiran Shepherd

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