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Roof cleaning is one of those jobs that Perth homeowners often put off - it’s out of sight, it doesn’t feel urgent, and it’s hard to know what it should cost. This guide gives you a clear picture of what roof cleaning involves, what you’ll typically pay in Perth in 2026, and how to know whether cleaning alone is enough or whether your roof needs more work.
How much does roof cleaning cost in Perth? Most single-storey homes pay $400 to $900 to have a tile roof professionally cleaned. A standard 150-220m² roof sits around $550 to $800, small roofs from $400, and large or two-storey homes $700 to $1,200. Metal roofs generally cost a little less.
What Does Roof Cleaning Cost in Perth?
For a typical single-storey Perth home with a concrete or terracotta tile roof (roughly 180-220m² of roof area), expect to pay:
| Home type | Typical price range |
|---|---|
| Small single-storey (up to 150m²) | $400-$600 |
| Standard single-storey (150-220m²) | $550-$800 |
| Large single-storey or two-storey | $700-$1,200 |
| Metal roofs (Colorbond or corrugated) | $350-$700 |
These are for cleaning only - pressure washing and debris removal. If treatment products (moss and lichen killers, sealer) are applied, or if the cleaning is part of a larger restoration package, the pricing will differ.
What Affects the Price?
Roof size is the primary factor. A larger roof takes longer to clean and may require more water and materials.
Roof pitch and complexity. Steeper roofs take longer and require more safety precautions. A simple gable roof cleans faster than a complex hip-and-valley roof with multiple planes.
Level of soiling. A roof covered in thick lichen growth and years of accumulated dirt takes significantly more time than one with surface dust and some light moss. Heavy lichen growth is also more stubborn and may require a treatment application on top of pressure washing.
Access. Single-storey homes are straightforward. Two-storey homes require additional safety equipment and more time.
Location. Coastal suburbs like Cottesloe, Scarborough, and Fremantle see more salt spray accumulation. Hills suburbs like Kalamunda and Mundaring tend to have heavier organic growth due to tree canopy. Both may need more intensive cleaning than a typical open suburban roof.
What Does Roof Cleaning Actually Involve?
Assessment
Before we start, we walk the roof to assess tile condition, identify broken or slipped tiles, and note any areas that need care during the wash. This also determines the right pressure settings - too much pressure on brittle or damaged tiles can cause unnecessary breakage.
High-Pressure Washing
We use commercial-grade pressure washing equipment to systematically clean the entire roof surface. This removes lichen, moss, algae, dirt, and any loose old coating. The process typically runs from the ridge down to the gutters in sections.
Gutters and Downpipes
After the roof wash, debris ends up in the gutters. A thorough roof clean includes clearing the gutters and checking downpipes aren’t blocked.
Optional: Moss and Lichen Treatment
In some cases - particularly where lichen is deeply established - a post-wash treatment application helps prevent regrowth and treats any remaining biological matter. This is often included in restoration packages but may be an optional add-on for cleaning-only jobs.
Is Roof Cleaning Enough, or Do You Need More?
Cleaning alone is appropriate when:
- Your roof was previously restored or painted and the coating is still in reasonable condition
- The tiles are structurally sound with no significant cracking
- The pointing along the ridge caps is intact
- You’re maintaining a roof that’s been well looked after
You likely need a full roof restoration when:
- The original or previous paint is fading, chalking, or peeling
- There are cracked or broken tiles that need replacing
- The ridge cap pointing is crumbling or missing
- The roof hasn’t been done in 15+ years
A clean will make your roof look better regardless of its underlying condition, but it won’t address structural issues or restore a coating that’s reached the end of its life.
Can You Clean Your Own Roof?
Pressure washers are widely available for hire, and some Perth homeowners do clean their own roofs. The risks worth considering:
Safety. Working on a wet, sloped surface is genuinely dangerous. Most roof falls happen during maintenance tasks, not professional work. If you have any doubt about your ability to work safely at height, don’t attempt it.
Pressure. Wrong pressure settings can crack tiles or damage fragile ridge caps. Old, brittle tiles are particularly vulnerable.
Effectiveness. Commercial cleaning equipment is significantly more powerful than consumer hire gear. Heavy lichen growth is very difficult to shift without professional-grade equipment.
For most Perth homeowners, the combination of safety risk and equipment limitations makes professional cleaning the better call.
Roof Cleaning as Part of Restoration
If you’re planning a roof restoration, cleaning is always the first step - it’s included in the restoration price. Getting a standalone clean done right before a restoration isn’t necessary; the cleaning will be redone as part of the restoration process.
Get a free quote for roof cleaning or a full assessment. We’ll let you know what your roof actually needs rather than upselling you on work that isn’t necessary.
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