Dwellings should be free from rising and penetrating damp. They should be free from condensation dampness. They should have adequate damp proofing. Properties should have adequate provision of natural and mechanical ventilation.
If there is good insulation, has adequate heating and there is still a problem with black mould, it could be that occupiers are producing a lot of moisture. This could be from not heating the property enough or not opening the windows when cooking, taking a bath or drying clothes.
Impact on health
Exposure to damp and mould can cause adverse health effects in susceptible person. These are likely to cause respiratory problems, respiratory infections, allergies or asthma. Damp and mould can also affect the immune system. The mental health and social effects of dampness and mould can not be underestimated.
Causes
- Creating excess moisture from cooking, bathing and drying cloths
- Poor heating
- Lack of insulation
- Poor ventilation
Prevention
- Good heating system and a good level of thermal insulation
- Low-level background heating
- Changing the surface finish
- Continuous low level background ventilation
- Trickle vents into replacement windows, high level air bricks, or other passive ventilation
- Mechanical ventilation or positive pressure ventilation system