Chemical Roof Cleaning
Black staining, moss or lichen can leave a roof looking tired. We inspect the surface first, then apply one Wet & Forget treatment where suitable.
Quotes and details explained before work proceeds
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Contact Steve to discuss the scope and cost

A Roof Treatment Selected After Assessment
Sydney's climate is tough on roofs. Heat, humidity, and regular rainfall create perfect conditions for moss, lichen, and algae to thrive. Over time, your roof becomes an eyesore—and these organisms can actually damage your tiles if left unchecked.
One Wet & Forget treatment is applied where suitable. Results depend on roof conditions and weather.
The Sydney Roof Doctor has worked on roofs throughout Sydney. We inspect the roof first, protect the surrounding property and explain what result to expect from the Wet & Forget treatment.
Roof Conditions We Assess
We assess roof growth and staining, then confirm whether one Wet & Forget treatment is suitable. Loose debris and gutter clearing are not included.
Moss & Lichen
Green growth and crusty organisms that trap moisture and damage tiles
Algae & Mould
Slippery growth and dark spots from persistent moisture
Dirt & Grime
Organic growth and weathering on roof tiles
Staining
Discolouration from rust, leaves, and organic matter
One Treatment, Where Suitable
One Wet & Forget treatment is applied where suitable; results depend on roof conditions and weather.
Roof Suitability Assessment
We assess the roof material and condition before confirming whether Wet & Forget is suitable.
- Suitability checked before treatment
- Treats growth on suitable surfaces
- One Wet & Forget treatment
- Scope agreed before work begins
- Results depend on roof conditions
Best for: Roofs suitable after assessment
Wet & Forget Treatment
A single Wet & Forget treatment for suitable roofs, applied after an assessment.
- Only applied where suitable
- Single Wet & Forget application
- Gradual visible results
- Results depend on conditions
- Only where the surface is suitable
Best for: Roofs suitable after assessment
Wet & Forget Chemical Roof Cleaning
Wet & Forget is applied as a single treatment on suitable roofs. Results develop over time and depend on conditions.

Cleaning for Different Roof Materials
We assess concrete, terracotta and metal roofs individually before confirming treatment suitability.
Concrete Tiles
Wet & Forget treatment for suitable roof surfaces
Terracotta Tiles
Wet & Forget only where the terracotta roof is suitable
Colorbond & Metal
Wet & Forget only where the metal roof is suitable
Corrugated Iron
Assessment of roof condition and treatment suitability
Our Chemical Roof Cleaning Process
From inspection to agreed scope, here is what to expect when you choose one Wet & Forget treatment.
Free Inspection
We assess the roof and confirm whether one Wet & Forget treatment is suitable.
Prepare & Protect
We protect your garden, cover sensitive areas, and ensure safe access to your roof.
Apply Treatment
Roof assessment followed by one Wet & Forget treatment where suitable.
Inspect & Finish
Final inspection and clean-up, with the agreed scope checked before the job is complete.
Why Choose The Sydney Roof Doctor for Chemical Roof Cleaning?
We confirm whether Wet & Forget is suitable, provide a clear quote and carefully protect the surrounding property.
Practical Roof Repair Advice
Speak directly with Steve about your existing roof, the proposed work and the individually quoted scope.
Professional Equipment
Treatment suitability confirmed after assessing the roof material and condition.
Wet & Forget Treatment
Wet & Forget is applied as one treatment where suitable. Results develop over time and depend on conditions.
Wet & Forget Treatment
One Wet & Forget treatment is applied where suitable. Results depend on roof conditions and weather.
Clear Written Quotes
Treatment suitability, agreed scope and price are confirmed before work begins.
Direct Contact With Steve
Speak directly with Steve about your existing roof, the proposed work and the individually quoted scope.
Frequently Asked Questions About Chemical Roof Cleaning
Answers about cost, treatment timing, gutter exclusions and suitability.
Reviews From The Sydney Roof Doctor Customers
Read recent Google feedback about the work, communication and care taken on site.
Chemical Roof Cleaning Across Sydney
Check our established cleaning coverage across the Inner West, North Shore, Hills District, Parramatta and Ryde.
Want to Know if Wet & Forget Suits Your Roof?
Send a few photos or request a free inspection. We’ll check whether Wet & Forget is suitable and explain the scope.