Can You Pressure Clean Colorbond Roofs?

Colorbond roofing is a popular choice for Australian homes due to its durability, aesthetic appeal and ability to withstand harsh weather conditions. However, like all roofing materials, Colorbond requires maintenance to keep it looking great and functioning effectively. 

In this blog, we’ll cover everything you need to know about Colorbond roof cleaning.

What Is Colorbond Roofing?

Colorbond roofing is made from steel and coated with a durable, baked-on paint finish. It comes in a range of colours and profiles, making it a versatile choice for various architectural styles. Its resistance to chipping, peeling and cracking makes it ideal for Australian climates, from coastal areas to the outback.

While Colorbond is highly durable, it can accumulate dirt, debris, mould and algae over time. Cleaning your roof not only enhances its appearance but also prolongs its lifespan by preventing potential damage caused by contaminants.

Is Pressure Cleaning Safe for Colorbond Roofs?

Yes, pressure cleaning can be a safe and effective way to clean Colorbond roofs when done correctly. However, there are some key considerations to keep in mind to avoid damaging the roof:

1. Pressure Level Matters

Using high-pressure settings on a pressure cleaner can potentially damage the paint coating of a Colorbond roof. Excessive pressure can strip the protective layer, leaving the metal exposed to corrosion. It’s important to use a low to medium pressure setting to clean the roof effectively without causing harm.

2. Use the Right Equipment

The nozzle and attachments used during pressure cleaning play a significant role in ensuring safe cleaning. A fan nozzle, for example, disperses water evenly, reducing the risk of concentrated pressure damaging the roof. Avoid using direct, high-pressure nozzles designed for tougher surfaces like concrete.

3. Angle of Cleaning

Always spray water at an angle rather than directly onto the surface. This reduces the force of impact and prevents water from being driven under the roof sheets, which could lead to leaks and other issues.

The Colorbond Roof Pressure Cleaning Process

When it comes to cleaning Colorbond roofs, the team at Order Of The Lawn typically follow the below process: 

1. Inspect the Roof

Before cleaning, we inspect the roof for any damage, such as loose screws, rust or peeling paint. We then address these issues to prevent further damage during cleaning.

2. Remove Debris

We clear the roof of loose debris like leaves and twigs using a soft broom or blower. This prevents larger particles from being pushed around by the pressure washer and scratching the surface.

3. Apply a Cleaning Solution

For roofs with stubborn mould, algae or dirt, we use a gentle cleaning solution compatible with Colorbond materials. Apply the solution with a soft brush or sprayer, allowing it to soak for a few minutes before rinsing.

4. Pressure Wash the Roof

Using a pressure cleaner set to low or medium pressure, we start cleaning from the ridge of the roof and work downward. This ensures water flows away from the roof’s peak and reduces the risk of water pooling or penetrating under the sheets.

5. Rinse Thoroughly

We rinse off all cleaning solution residues. Leftover chemicals can damage the paint coating over time.

Benefits of Pressure Cleaning a Colorbond Roof

Regular cleaning of your Colorbond roof offers numerous benefits, including:

• Improved Appearance: A clean roof enhances your home's curb appeal, especially if you plan to sell or rent the property.
• Prolonged Lifespan: Removing contaminants like mould and algae helps prevent premature wear and tear.
• Energy Efficiency: A clean roof reflects heat more effectively, keeping your home cooler and potentially lowering energy bills.
• Prevention of Damage: Regular cleaning reduces the risk of corrosion and other issues caused by accumulated debris.

DIY vs. Professional Roof Cleaning

While pressure cleaning can be done as a DIY project, hiring professionals offers several advantages:

• Safety: Roof cleaning involves working at heights, which can be risky without proper equipment and experience.
• Expertise: Professionals know the right pressure settings and techniques to clean without causing damage.
• Save Time: Cleaning a roof can be time-consuming, especially for large or steep roofs. Professionals can complete the job quickly and efficiently.
• Thorough Results: A professional service ensures every inch of your roof is cleaned, including hard-to-reach areas.

What Not to Do When Pressure Cleaning Colorbond Roofs

To avoid damage, here are some common mistakes to avoid:

• Using Harsh Chemicals: Abrasive cleaners can strip the paint coating and harm the environment.
• High Pressure on Delicate Areas: Overly strong pressure on roof edges or seams can cause leaks and damage.
• Neglecting Safety Measures: Always use appropriate safety gear and ensure the roof is dry to prevent slipping.

How Often Should You Clean a Colorbond Roof?

The frequency of cleaning depends on several factors, including your location and environmental conditions. For example:

• Coastal Areas: Clean every 6–12 months to remove salt buildup that can lead to corrosion.
• Bushland Areas: Clean annually to clear leaves, debris, and potential fire hazards.
• Urban Areas: Clean every 12–18 months to remove dirt, dust and pollution.

Environmental Considerations

When cleaning your Colorbond roof, it’s important to consider the environmental impact. Use eco-friendly cleaning solutions and ensure wastewater does not flow into stormwater drains. Properly disposing of debris and chemicals helps protect the local environment.

Conclusion

Pressure cleaning is a safe and effective method for maintaining your Colorbond roof, provided it’s done with care. By using the right techniques, equipment and cleaning solutions, you can restore your roof’s appearance and extend its lifespan. 

For professional roof cleaning in Brisbane, contact Order Of The Lawn. Our team ensures your Colorbond roof is cleaned safely and efficiently, leaving it looking as good as new. Reach out today to book your service and keep your roof in top condition!