Health risks from mould exposure
The Housing Health and Safety Rating System class mould as a category 1 risk to health, the same category as asbestos.
Moulds produce mVOC’s (microbial volatile compounds) which are considered irritants. Inhaling or touching mould spores may cause an allergic reaction or trigger an asthma attack.
Indoor dampness and mould may not only aggravate pre-existing respiratory conditions but there is also (limited) evidence it may cause new symptoms.
- Sneezing
- Runny nose
- Irritated eyes
- Skin rash
- Unexplained nausea
- Breathing problems
- Tiredness
- Asthma attacks

Who is most at risk of developing damp and mould health issues?
Exposure to mould spores is unhealthy for everyone and should be avoided. However, there are certain groups of people who need to take extra precautions to avoid contact with mould because they’re more likely to be sensitive to allergens.
Many pregnant women and new parents are particularly concerned about the impact of mould on their children. Babies and children are more vulnerable to mould, so you should do all you can to tackle it.
According to the NHS, those groups of people more sensitive to mould/allergens include:

- Babies and children
- Elderly people
- Anyone with existing skin problems, such as eczema
- Anyone with respiratory problems
- Anyone with a weakened immune system