Can Mildew on Window Sills Make You Sick?

Allergies

• Those who are allergic to mold generally have more noticeable responses than those who are not allergic. Reactions in individuals who have mold allergies can include runny nose, sneezing, skin rashes and red eyes. Even in non-allergic individuals, mold can cause eye, skin, nose and/or throat irritation.

Asthma

• Individuals who are allergic to mold and also suffer from asthma are at a greater risk, as exposure to mold may cause asthma attacks.

Mycotoxins

• In rare cases, exposure to mold may lead to a large ingestion of mycotoxins, a toxic element found in some molds. Exposure can lead to vomiting, lung disease, reduced immune function and even death. Infants, the elderly and individuals with compromised immune systems are at greater risk when exposed to mycotoxins. Severe reactions due to mycotoxins are more common in humans who have ingested mold-tainted food or who live in water-damaged homes with extremely high concentrations of mold. Mold on a windowsill does not present a high risk for severe mycotoxin reactions.

Prevention and Removal

• Mold needs both oxygen and moisture to flourish, so reducing the presence of moisture will prevent mold from growing. Replace the insulation surrounding your windowsill to help reduce mold growth, and place a dehumidifier near the problem windowsill to help limit moisture build-up. Check for leaks around the windowsill where water can enter and seal them up. You can also use mold-resistant paint on windowsills to reduce the risk of mold growth. For mold that has already appeared, remove it with water and a strong detergent and dry it thoroughly.