Condensation, mould and your health
Heating isn't always a priority in New Zealand homes, but skipping out on it during the winter can invite an unwelcome guest: mould. Mould thrives in damp, cold environments, and its presence can cause more than just cosmetic damage—it can lead to serious health issues. Let's dive into how mould affects our well-being and when you should take action.
Can Mould Make You Sick? Mould is a natural part of our environment, breaking down organic material. However, when it takes up residence in our homes—on walls, windows, or even in bathroom grout—it can negatively affect our health. Long-term exposure to mould spores can irritate the lungs and trigger allergies or asthma, especially in children. While not everyone reacts the same way, spending extended periods in mouldy environments increases the risk of respiratory issues.
Health Risks of Mould Exposure: Mould exposure can cause various symptoms, including:
Teary eyes, sneezing, and dry coughs.
Irritation in the eyes, nose, and throat.
Long-term exposure could lead to chronic bronchitis. Certain moulds, like Aspergillus niger (black mould), produce toxins such as aflatoxin, which in large amounts, can pose serious health risks like cancer. People with weakened immune systems, such as those undergoing chemotherapy or organ transplants, are particularly at risk of invasive mould infections.
How Much Mould is Too Much? The World Health Organization (WHO) has recognized the connection between indoor mould and respiratory issues since 2009. However, determining how much mould is "too much" can be difficult, as reactions vary based on individual sensitivity and exposure levels. The critical factor is the duration and frequency of mould exposure, especially if hidden mould is present in your home.
When to Tackle Mould Yourself: Dealing with mould early is essential to avoid long-term health and structural problems. If the affected area is less than half a square meter, you can likely handle it yourself using household cleaners or alcohol (70-80%). Always wear gloves, a mask, and protective goggles. However, for larger or persistent mould issues, it's best to call in professionals to ensure it is properly removed.
Mould may seem like a minor inconvenience, but its health impacts can be severe, especially if ignored. Heating your home properly can prevent mould from settling in, but if you notice mould, address it as soon as possible to protect both your home and your health. For extensive mould problems, don't hesitate to call in the experts.
