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Why Are My Eaves Mouldy? Top Causes, Easy Fixes & Prevention Tips


Why Do Eaves Get Mouldy?

Mould on eaves is often due to moisture buildup, lack of ventilation, and nearby vegetation that traps humidity. Addressing mould promptly can prevent long-term damage. Let’s explore the primary causes, how to remove mould, and tips to keep your eaves clean and mould-free.


eaves covered with mildew

What Causes Mould on Eaves?

Mould on eaves is a common issue, especially in humid areas like Brisbane, Gold Coast, and Redlands. Here are the top reasons:

* Humidity

Queensland’s high humidity—often over 60%—creates an ideal environment for mould growth.




* Poor Ventilation

When air doesn’t circulate, moisture lingers, allowing mould to thrive on eaves and other exterior surfaces.

* Clogged Gutters

Leaves and debris in gutters can cause water overflow, which leads to mould on adjacent eaves.

* Proximity to Vegetation

Trees and bushes too close to your home increase moisture around the eaves, encouraging mould growth.


clean shiny eaves on the side of the house

How to Clean Mould Off Eaves Safely

Removing mould from eaves is essential to maintain your home’s curb appeal and prevent damage. Follow these steps for safe, effective cleaning:

* 1. Soft Wash with Eco-Friendly Products

Soft washing uses gentle pressure combined with eco-friendly solutions to remove mould without damaging surfaces. Our professional team at OceanWave Soft & Pressure Washing specializes in soft washing, which is both safe and highly effective.

* 2. Rinse Thoroughly

After applying the cleaning solution, rinse the eaves thoroughly to ensure no residue remains.

* 3. Inspect for Damage

Look for signs of decay or damage, as mould can weaken surfaces over time. If you notice any, it’s best to call a professional to prevent further deterioration.


Preventing Mould Growth on Eaves – Top Tips

Keeping your eaves mould-free requires regular maintenance. Here are some easy steps you can take:


Luis from OceanWave soft and pressure washing cleaning eaves with hose

* Keep Gutters Clean

Regularly clear gutters to prevent water overflow and pooling around eaves.

* Trim Nearby Vegetation

Ensure that trees and shrubs don’t brush up against your eaves to reduce trapped moisture.

* Increase Ventilation

Improving air circulation around your home can make a big difference. Open windows on dry days, or use ventilation systems if available.



* Schedule Regular Soft Washing Services

Professional soft washing at least once a year can prevent mould buildup and extend the life of your eaves. Contact OceanWave for expert eaves cleaning across Brisbane, Gold Coast, and Redlands.



FAQs About Mouldy Eaves


Why Are My Eaves Mouldy?

Eaves get mouldy from high humidity, poor ventilation, clogged gutters, and nearby vegetation that traps moisture.


Soft washing is the best method for cleaning mouldy eaves safely and effectively. See our detailed guide here.


How Can I Stop Mould from Coming Back on My Eaves?

Regular cleaning, trimming nearby trees, and ensuring good air circulation can prevent mould from returning.


Can Mould on Eaves Affect My Home’s Air Quality?

Yes, mould spores from exterior eaves can sometimes enter your home, impacting air quality, especially in humid climates.


Direct pressure washing on eaves can damage delicate surfaces. Soft washing is a safer alternative that removes mould and dirt without causing harm.


What’s the Difference Between Mould and Mildew on Eaves?

Mould and mildew are both fungi, but mould is usually black or green, while mildew is white or gray and tends to be powdery.




Luis from OceanWave Soft and Pressure Washing cleaning eaves outside of house

Choose OceanWave for Expert Mould Removal and Eaves Cleaning

At OceanWave Soft & Pressure Washing, we provide specialized services in Brisbane, Gold Coast, and Redlands to remove mould and prevent its return.

Our eco-friendly soft washing approach is gentle on your eaves while being tough on mould.

Call us today to schedule your next cleaning and keep your home looking fresh and mould-free!

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