What Does the WHO Say About Living in a Mouldy Building?

The World Health Organization (WHO) has conducted extensive research into indoor air quality, specifically focusing on dampness and mould. Their findings leave no room for ambiguity: living in a mouldy building poses a significant risk to human health.

The Core Findings

According to the WHO guidelines for indoor air quality, there is sufficient epidemiological evidence to show that occupants of damp or mouldy buildings are at an increased risk of experiencing:

• Respiratory symptoms (coughing, wheezing)
• Respiratory infections
• Asthma exacerbation
• Allergic rhinitis

It's Not Just About Allergies

While allergic reactions are common, the WHO notes that dampness and mould also produce volatile organic compounds (VOCs) and mycotoxins. These chemical compounds can cause a range of toxicological effects when inhaled over long periods, affecting the immune system and overall well-being.

The WHO Recommendation

The WHO is clear on its primary recommendation: "The most important means for avoiding adverse health effects is the prevention (or minimization) of persistent dampness and microbial growth on interior surfaces and in building structures."

They state that remediation should not be delayed. Covering up mould with paint or using bleach to wipe away visible signs does not solve the root cause. Professional remediation, such as our comprehensive dry fogging, coupled with moisture control, is the only WHO-aligned approach to creating a safe indoor environment.