Melbourne roof cleaners

High Pressure Cleaning That Restores Your Roof

SIA Roofing removes years of built-up moss, lichen, dirt and debris from your roof and exterior surfaces — leaving your property looking sharp and protecting the materials underneath from long-term damage.

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Fully insured · Residential and commercial · Melbourne and surrounds

More Than a Rinse — a Proper Clean That Lasts

High pressure cleaning is one of the most effective ways to extend the life of your roof, gutters and exterior surfaces — but only when it is done correctly. At SIA Roofing, our high pressure cleaning service is carried out by experienced roofing tradespeople, not general labourers with a hired machine. We adjust water pressure to suit your specific roofing material, whether that is terracotta tiles, concrete, Colorbond or slate, so the clean removes contaminants without lifting or cracking anything underneath. Because we also handle roof repairs, replacements and maintenance, we inspect your roof while we are up there and flag anything that needs attention before it becomes a costly problem.

What our high pressure cleaning covers

A Complete Clean for Every Surface We Touch

Roof tile cleaning — terracotta, concrete and slate
We remove moss, lichen, algae and embedded grime that trap moisture and accelerate tile deterioration.
Colorbond and metal roof cleaning
Low-to-medium pressure settings protect the paint finish while clearing dirt, bird droppings and organic growth.
Ridge cap and valley cleaning
Debris accumulates in roof valleys and around ridge caps — we clear these areas to restore proper water flow.
Gutter exterior cleaning
We blast the outer face of gutters to remove staining and organic build-up that dulls your home's appearance.
Fascia and eave cleaning
Fascia boards and eaves collect mould and cobwebs — we clean these surfaces as part of a thorough roof clean.
Post-clean roof inspection
Once the surface is clear, our tradespeople inspect for cracked tiles, failing pointing and early signs of rust or corrosion.

How Our High Pressure Cleaning Service Works

Free quote and site assessment

We visit your property, assess the roofing material, the extent of moss or dirt build-up, and the roof's overall condition before recommending the right approach.

Surface preparation

We clear loose debris by hand and apply a pre-treatment solution to heavily affected areas of moss and lichen so the pressure wash achieves a deeper, longer-lasting result.

Pressure washing at the correct setting

Our team uses calibrated equipment set to the appropriate pressure for your specific roofing material — protecting the surface while removing every layer of contamination.

Debris removal and site clean-up

All dislodged moss, dirt and organic matter is collected and removed from your property so your gutters and downpipes are not overwhelmed after the job.

Inspection report and next steps

We walk you through any issues spotted during the clean and provide a written summary — with no obligation to proceed with repairs, though we can handle them if needed.

High Pressure Cleaning — Before and After

Heavy moss and lichen removed from terracotta tiles in Melbourne's inner east

Same terracotta roof restored to clean tile after high pressure treatment

Concrete tile roof with algae staining treated and cleaned

Colorbond roof cleaned and inspected on a commercial property

Ridge cap and valley cleared of debris during a full roof clean

Fascia and gutter exterior cleaned as part of a complete roof service

High Pressure Cleaning — Common Questions

How often should I have my roof high pressure cleaned?

For most Melbourne properties, a thorough roof clean every two to three years is sufficient to keep moss, lichen and dirt under control. Properties surrounded by large trees or in areas with heavy rainfall may benefit from more frequent cleaning. We can advise the right schedule for your specific roof after an inspection.

Will high pressure cleaning damage my roof tiles?

Not when it is done by experienced roofing tradespeople using the correct equipment settings. We adjust the water pressure to match your roofing material — terracotta, concrete, slate and Colorbond all require different approaches. Using excessive pressure on the wrong surface is a common mistake made by non-specialist operators, which is why we use calibrated machines and trained staff.

Can you clean a roof that already has cracked or broken tiles?

Yes, but we will identify and document any damaged tiles during our initial assessment and recommend repairing them before or alongside the clean. Pressure washing over cracked tiles can allow water to penetrate the roof structure, so we address those issues as part of the same visit where possible.

Do I need to be home during the high pressure cleaning?

You do not need to be present for the entire job, but we ask that someone is available at the start so we can confirm access, discuss any specific concerns, and walk through the property briefly. We will contact you when the job is complete and provide our inspection findings.

What happens to the moss and debris that comes off the roof?

We collect and remove all dislodged material from your property as part of the service. We also take steps to protect your gutters and downpipes during the clean so they are not blocked by the debris that washes off — this is an important step that is often overlooked.

Do you offer high pressure cleaning as part of a broader roofing package?

Yes. Because SIA Roofing also handles roof repairs, gutter cleaning and full replacements, many clients combine a high pressure clean with a gutter clean-out or minor tile repairs in a single visit. This saves time and reduces the number of contractors you need to coordinate — which is one of the key reasons clients choose us.

Ready to See What Your Roof Really Looks Like?

Get a free, no-obligation quote for high pressure roof cleaning from SIA Roofing. We service Melbourne and the surrounding regions and can combine your clean with a roof inspection or gutter service.

Get a free quote