Quick answer: A professional roof wash in Geelong typically costs $580–$1035 for a standard home, takes 5–8 hours, and should be done every 2–3 years for most roofs, or yearly for coastal Bellarine and Surf Coast homes. Wash Rite uses a low-pressure soft wash that kills moss and lichen at the root without damaging tiles, pointing or Colorbond.
If you have looked up at your roof lately and noticed black streaks, green moss or orange and grey lichen spots, you are not alone. Geelong's mix of cool, damp winters and salty sea air makes it one of the best places in Victoria for roof growth to thrive. The good news: it is easy to fix, and fixing it early saves you a lot of money.
This guide answers the questions Geelong homeowners ask us most about roof washing.
How much does roof cleaning cost in Geelong?
Most Geelong homeowners pay between $580 and $1035 for a full roof clean, with a typical single-storey home landing around $765 + GST (Geelong cost guide, July 2026).
Your price depends on five things:
1. Roof size. A 3-bedroom single-storey home in Belmont is quicker than a two-storey family home in Armstrong Creek.
2. Roof pitch and height. Steep or double-storey roofs need extra safety gear and set-up time.
3. Amount of growth. Light black streaks need one treatment. Thick moss on a 30-year-old tile roof in Highton may need more.
4. Roof type. Concrete tile, terracotta and Colorbond are each treated differently.
5. Add-ons. Gutter cleaning, solar panel cleaning or a house wash done on the same visit usually costs less than booking them separately.
What is the difference between roof washing and roof pressure washing?
Roof washing done properly is a soft wash, not a high-pressure blast. A soft wash applies a biodegradable cleaning solution at low pressure, lets it kill the moss, lichen and mould spores, and then rinses gently.
High-pressure cleaning can strip the protective coating from concrete tiles, crack terracotta, blast out ridge pointing and force water under the tiles. It also only removes what you can see. The roots of lichen and moss survive and regrow within months.
That is why Wash Rite soft washes roofs. All Wash Rite teams have extensive training on proper softwash methods to ensure quality results.
How often should I clean my roof in Geelong?
For most Geelong homes, every 2 to 3 years is right. Clean more often if your home:
1. Is within a kilometre or so of the water, such as in Ocean Grove, Barwon Heads, Portarlington, Queenscliff, Torquay or Jan Juc.
2. Sits under or near trees, which drop leaves and keep the roof shaded and damp.
3. Has a south-facing roof section that gets little sun, where moss grows fastest.
4. Has Colorbond in sheltered spots. BlueScope, which makes Colorbond, says areas the rain does not reach should be washed at least every 6 months, and every 3 months where marine salt spray is common (BlueScope TB-4).
Why does my Geelong roof have black streaks, moss and lichen?
Those black streaks are usually algae (often called Gloeocapsa magma) feeding on minerals in the tiles. Green, spongy patches are moss. The flat orange, yellow or grey spots are lichen, which grips hard and is the toughest to remove.
All three love the same things: moisture, shade and time. Geelong's cool, wet winters give them moisture. Trees in established suburbs like Newtown, Highton and Geelong West give them shade. And most roofs go years without a clean, so they get time.
Growth is not only cosmetic. Moss holds water against tiles, can lift them, and washes down into gutters where it causes blockages and overflow.
Is roof washing safe for tiles, terracotta and Colorbond?
Yes, when it is a soft wash done by a trained operator. Here is how each roof type is handled:
Important for older homes: using a high-pressure cleaner on asbestos cement roofing is illegal across Australia. It breaks down the sheeting and spreads asbestos residue over your property and your neighbours'. Clean-ups have cost between $7,000 and $50,000 (WorkSafe safety alert). If your Geelong home was built before 1990 and has fibro or corrugated cement sheeting, ask us to check before any work starts.
What happens during a Wash Rite roof wash?
1. Free quote and inspection. We look at your roof type, pitch, growth level and any damage.
2. Protect your property. Gardens, windows, cars and outdoor furniture are covered or rinsed.
3. Apply the treatment. A biodegradable solution is applied at low pressure across the whole roof.
4. Let it work. The solution kills moss, lichen and mould spores down to the root.
5. Gentle rinse. Loose growth is rinsed off without blasting the tiles.
6. Gutters and downpipes. We flush them so debris does not cause blockages.
7. Final check and photos. You get before and after photos of the job.
Will the roof look clean straight away?
Yes, dirt, algae and moss come off on the day. majority of heavy lichen will be removed with some roots can take a few weeks of rain to fully break down and wash away after treatment. That is normal and is a sign the treatment is killing the growth rather than just cutting off the top.
Should I clean my roof before selling or painting it?
Yes. A clean roof is one of the cheapest ways to lift street appeal before a sale in Geelong's competitive market. If you are planning a roof restoration or repaint, the roof must be properly clean first or the new coating will not bond.
Can I clean my roof myself?
You can, but we do not recommend it. Roof work is one of the most common causes of serious falls at home, wet tiles are slippery, and a hired pressure washer can crack tiles and void warranties. Read our full guide on DIY vs professional pressure washing in Victoria before you decide.
Roof washing FAQs
How long does a roof wash take? Most single-storey Geelong homes take 2 to 4 hours. Larger or steeper roofs can take a full day.
Do I need to be home? No. We just need access to an outside tap and the roof. We will send photos when we are done.
Is the cleaning solution safe for my garden and pets? We use biodegradable products and pre-wet and rinse gardens. Keep pets inside during the job.
Will roof washing fix leaks? No. Washing removes growth that can cause leaks, but cracked tiles or failed pointing need a roofer. We will tell you if we spot damage.
Does a roof wash help my solar panels? Yes. Dirt and growth washing down off the roof settle on panels. We can clean them on the same visit.
Which areas do you service? All of Greater Geelong, the Bellarine Peninsula and the Surf Coast, including Lara, Corio, Belmont, Highton, Grovedale, Waurn Ponds, Armstrong Creek, Leopold, Drysdale, Clifton Springs, Ocean Grove, Barwon Heads, Torquay and Bannockburn.
Book a roof wash in Geelong
Wash Rite is part of one of Australia and New Zealand's largest exterior cleaning networks, with more than 140 trucks on the road. Your local Geelong team brings that training and equipment to your roof.
Get a free, no-obligation roof wash quote today: call 1800101216 or
