If you’ve noticed strange orange streaks or slimy patches in your bathroom, you’re not alone. Orange mould is a common and unsightly issue found in many Australian homes. But beyond the discolouration and unpleasant appearance, it can also pose risks to health and hygiene if not dealt with promptly. This article explores why orange mould is growing in your bathroom, how it forms, and what you can do about it, with a focus on effective mould removal strategies.
Orange mould is a bacterial or fungal growth that thrives in moist, warm, and poorly ventilated environments. Unlike the more infamous black mould, orange mould often has a slimy texture and can appear as streaks, blobs, or film-like layers. It frequently turns up in showers, around drains, on tile grout, and even on bathroom curtains. The colour comes from specific species of bacteria and fungi that thrive in high-moisture conditions.
Bathrooms provide the ideal environment for mould growth:
High Humidity: Hot showers release steam, and without proper ventilation, the moisture lingers.
Constant Water Exposure: Shower walls, basins, and tiles stay wet for long periods.
Poor Air Circulation: Small or windowless bathrooms often lack proper airflow.
Soap Residue and Organic Matter: Mould feeds on soap scum, hair, and skin cells.
These conditions allow mould to take hold and spread quickly. Regular cleaning might slow it down, but without addressing the root causes, it often returns.
One of the most common organisms responsible for orange mould is Serratia marcescens, a type of bacterium. It typically appears in moist areas such as shower corners and toilet bowls. It is not technically a mould but is treated similarly due to its appearance and growth habits. Fungal species like Aureobasidium pullulans can also contribute to the orange hue.
Understanding the source helps inform the best mould removal techniques. For instance, bacterial orange mould is resistant to some traditional mould killers and may require targeted cleaning products.
While orange mould is not usually as dangerous as black mould (Stachybotrys chartarum), it still poses health risks. Inhalation or contact can cause respiratory irritation, skin rashes, or allergic reactions in sensitive individuals. For households with young children, elderly residents, or those with compromised immune systems, prompt mould removal is essential.
Knowing where orange mould hides can help you spot and remove it early. Common areas include:
Shower tiles and grout lines
Bathtub rims and corners
Underneath shampoo bottles
Toilet bowls and under the rim
Sink drains and plugs
Ceiling corners in poorly ventilated bathrooms
Prevention is always better than cure when it comes to mould removal. Here are proactive steps to stop orange mould from taking over:
Improve Ventilation: Use an exhaust fan or open a window to remove moisture after showers.
Wipe Surfaces Dry: Towel off tiles and glass doors after use.
Use a Squeegee: Keep one in the shower to remove water from walls.
Fix Leaks Promptly: Dripping taps and loose seals increase moisture levels.
Use Mould-Resistant Products: Consider anti-mould paint or sealant.
Regular Cleaning: Don’t let soap scum and hair build up, as they fuel mould growth.
prompt and thorough mould removal is key
If mould prevention hasn’t worked and you’re faced with an outbreak, prompt and thorough mould removal is key. Here’s how to tackle it:
Wear gloves, a face mask, and goggles to protect yourself from spores and bacteria.
Use a bathroom-specific mould removal spray or make a solution using vinegar and baking soda. Avoid bleach on porous surfaces, as it can damage grout and may not fully kill mould roots.
Use a stiff-bristled brush to scrub affected areas, paying special attention to grout lines and crevices.
After cleaning, rinse with hot water and dry the surfaces completely. Leaving areas damp will allow mould to return quickly.
Severe infestations may require repeated applications or professional help.
Mould removal isn’t just a one-off job. To keep your bathroom mould-free, consistency is key.
If the mould returns despite your best efforts, or if it’s affecting areas like wall cavities or ceilings, professional mould removal services may be necessary. Experts can assess the situation, use specialised tools, and ensure the problem doesn’t return.
In rental properties, extensive mould may also be a maintenance issue. Document it and inform your property manager or landlord.
“It’s Just Dirt”: Many people mistake orange mould for rust or soap scum.
“Bleach Kills Everything”: Bleach can discolour but may not eliminate spores or bacteria.
“It’s Harmless”: Long-term exposure, especially in humid climates, can lead to health issues.
Understanding these myths can lead to more effective mould removal decisions.
Orange mould is more than just a cosmetic issue. It’s a sign that your bathroom environment is supporting microbial growth. Through proper mould removal practices, better ventilation, and consistent hygiene, you can stop orange mould from taking over your bathroom.
Whether you opt for DIY solutions or call in professional help, addressing the issue early and thoroughly will protect both your home and your health. Don’t wait for mould to become a bigger problem—take action today with a reliable mould removal strategy.
Does your property need professional mould removal? Trust the expert with AllAces Cleaning & Restoration today!
AllAces Cleaning & Restoration Expert
Aaron is a seasoned professional with over 16 years of experience in the restoration industry. Specialising in large-scale restoration projects and water damage restoration, Aaron has built a reputation for delivering exceptional results in challenging situations.