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A concrete tiled roof is strong and built to last. Many homeowners choose it because it handles changing weather well. However, over time, dirt, black algae, and other dead growths can build up on the roof surface.
When buildup appears, many people try to clean the roof tiles themselves. But using the wrong method, like water blast cleaning or high-pressure techniques, can cause damage. Choosing safe roof cleaning methods helps protect your roof and extend its life.
Why Roof Tiles Get Dirty
Concrete tiles are slightly porous, which allows moisture to stay on the roof surface. This creates the ideal environment for moss, algae and lichen growth.
Common causes include:
- Damp or shaded areas
- Debris and leaves on the roof tiles
- Blocked gutters
- Wet weather conditions
Over time, these lead to stains, including black algae, and other dead growths that spread across the roof.
What Happens If You Do Not Clean Roof Tiles
If you do not clean your roof regularly, problems can develop. Black algae may spread across roof tiles, while moss can trap moisture. This can weaken modern concrete tiles and damage the roof surface. For homes using tank water or connected to water tanks, buildup may also affect water quality.
Keeping your roof in a clean condition helps protect both your home and your roofing materials and prevents you from getting emergency roof leak repairs.
How to Clean Concrete Roof Tiles
- Avoid High-Pressure Methods - using high-pressure water or pressure cleaning may remove dirt quickly, but it can damage the roof surface. It may also force water under the tiles.
- Use the Right Cleaning Solution - a proper solution breaks down moss, algae and lichen growths safely. Some treatments act as a bio shield, helping reduce regrowth for up to 12 months.
- Use Low-Pressure Cleaning - low-pressure methods safely clean roof tiles without damage. Professionals also know the strongest part of the roof if they need to walk on the roof areas.
Why Professional Roof Cleaning Is Better
Roof cleaning can be risky without proper experience. Walking on a concrete tiled roof without knowing the strongest part can cause cracks.
Professionals avoid unsafe methods like water blast cleaning techniques. Instead, they use controlled systems to:
- Clean roof tiles safely
- Remove black algae and dead growths
- Apply protective treatments
- Prepare your roof for ongoing maintenance
How Often Should You Clean Roof Tiles
Most roofs need cleaning every one to three years. Homes in damp or shaded areas may need more frequent roof cleaning due to faster growth.
Regular cleaning helps maintain a clean condition and protects the roof surface from long-term damage.
Final Thoughts
Cleaning roof tiles is important for maintaining your concrete tiled roof. Dirt, black algae, and dead growths can cause damage if left untreated.
Using safe roof cleaning methods instead of high-pressure water helps protect modern concrete tiles. Regular care keeps your roof in a clean condition and ready to handle changing weather.
Protect Your Roof With Professional Cleaning
A clean roof is a protected roof. Proper roof cleaning removes buildup safely and helps maintain your roof surface without damage.
Call Roof Works today on 03 667 3174 or book online to save $15 and get expert help to clean roof areas and prepare your roof for long-term protection.
Got a question?
Contact us for a FREE installation quote or book your job online today.
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The "Same Day Service Guarantee or it's Free" applies to:
a. Residential work and Commercial only.
b. Jobs specified as needing same day service when booking a job by phone or online.
c. Residential and Commercial work booked with Grammar Electrical:
i) Before 11:00AM
ii) For calls or online bookings received after 11:00AM, the customer will be offered a job. Booking for the next business day and normal callout fees ($170+ GST) will apply.
iii) Any other jobs booked outside business hours (9:00AM - 5:00PM Monday- Friday) will incur after hours charges.
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d. If Grammar Electrical are unable to attend on the same day (within 24 hours) for a job booked by the customer, the standard callout fee of $170 + GST will be waived and is free, but all other normal charges, fees and expenses will apply to perform the Electrical Services and to provide any products/materials concerning those services.
e. The Standard Callout Fee will be deducted from your bill as long as you pay within your invoice's due date. The callout charge is applicable if your invoice is overdue.
f. If Grammar Electrical are willing and able to perform the Service or provide the Goods on the same day the job is booked, however the Customer for whatever reason does not give access to their property on the day, Grammar Electrical will be deemed to have complied with it's "Same Day or it's Free" guarantee and shall be entitled to charge the customer the standard call-out fee.
g. This offer is not a guarantee of work being completed. The completion of the job will depend on stock availability and also the amount of work required.