Mould & MildewMould and mildew. These are two words you’ve heard together ever since commercials for bathroom cleaning products existed. But do we really think about what the difference is? There are quite significant differences. If researchers couldn’t tell between the two, they’d not have been able to come up with penicillin. Let’s take a look at the more striking differences between mould and mildew.


Both are from the fungi family, but mould is a bit harder to classify. There are so many different types of microbes for mould, but mildew belongs to one particular group, called Erysiphales.


You can tell the difference between mould and mildew by its appearance. When mould grows, it grows upwards and outwards in a bump. When mildew grows, it grows in a flat shape across a surface. Additionally, mould can be a rainbow of colors, such as black, brown, pink, green, purple and orange. Mildew is usually yellow or white.


Now that you know what mould and mildew look like, you can probably think about times when you’ve seen the two. You’ll notice that mould grows on your food, like cheese. Mould is the stuff you find on your ceilings, inside your walls and growing on wood. You’ll find mildew in your bathroom most commonly. It prefers to grow on your sink, bathtub, toilet and your shower.


Mould, even though it can be terribly negative for your health, it can also restore it. Mould is the reason we have penicillin. Well, that and fantastic scientists. Mildew, unfortunately, has no claim to fame. It has been the bane of many a bathroom scrubber and should continue to be for some time to come.

Health Effects

Mould and mildew both have negative consequences for health. Mould problems are usually related to respiratory problems. This can be in the form of allergic reactions, lung problems and can make asthma worse. If you’re being affected by mildew, you might be experiencing a headache, lung problems or coughing. If you are experiencing health problems due to mould or mildew, its best to take action immediately.


Preventing both mould and mildew in your home can be the same. They both prefer moist environments, so the best prevention is by keeping your home cool, clean and with excellent airflow. If you want to keep mould out of your fridge, throw away perishable food within a few days of expiring.

Knowing the difference between mould and mildew can help you to know when to take which action. Use these tips to help in fight for knowledge and to keep your home fungi free.

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