Damp, mould and condensation

Everyone has the right to a warm, secure and decent home. Landlords must ensure that the accommodation they provide is free from serious hazards. Excessive moisture can promote the growth of microorganisms such as mould and other fungi, certain species of house dust mites, bacteria or viruses. The more serious the damp and mould problem and the longer it is left untreated, the worse the health impacts and risks are likely to be. The respiratory effects of damp and mould can cause serious illness and, in the most severe cases, even death. Most people come into contact with the substances produced by damp and mould by breathing them in. This means they predominantly affect the airways and lungs. Damp and mould can cause disease and ill health in anyone, but especially in higher risk groups, such as:

  • People with a pre-existing health condition (for example allergies, asthma, COPD, cystic fibrosis, other lung diseases and cardiovascular disease
  • People of all ages who have a weakened immune system, such as people who have cancer or are undergoing chemotherapy
  • Pregnant women
  • Young children
  • Older people
  • People who are bedbound, housebound or have mobility problems making it more difficult for them to get out of a home with damp and mould and into fresh air

Mental health effects

Some people who are exposed to damp and mould might experience poor mental health as a result of living in a home with damp and mould. This could be due to:

  • The effects of mould on property and belongings
  • Being blamed for damp and mould
  • Social isolation as a result of not wanting visitors in the home
  • Delays in response or repairs following reporting of damp and mould and/or poor quality of repairs

Taking a proactive approach to reduce the risk of damp and mould

Landlords, irrespective of whether they own one or multiple homes must adopt a proactive approach to the identification and tackling of damp and mould. This should include regular inspections to identify any repairs issue in the property. Some homes are more at risk of damp and mould, they include:

  • Homes where residents feel unable to open windows due to concerns about loss of heat, security, noise, or high outdoor air pollution
  • Homes that are poorly or inadequately insulated
  • Homes with inefficient or ineffective and expensive to run heating systems
  • Homes that are poorly ventilated
  • Homes without adequate damp proof courses
  • Homes that are poorly maintained
  • Homes that are overcrowded

It's important for landlords to support tenants to understand what they can do to reduce damp and mould, but this must never be a substitute for addressing the underlying causes of damp and mould.

How to remove black mould

While the issue is investigated and resolved you should clean off mould if it is a relatively minor issue.  If large areas are affected ask your landlord for professional contractors.

Care has to be taken to avoid contact with microscopic mould spores and not to further the spread of spores. In cleaning away mould wear rubber gloves, eye protection and a protective mask which covers your nose and mouth.

Open windows before, during and after the cleaning but close doors to prevent mould spores transferring to other areas of your home.

Do not brush the mould as it releases more spores. Next wipe down affected areas using a disposable cloth with diluted bleach or a fungicidal wash (Always follow the safety instructions on the bottle).

Allow the surface to dry and vacuum the room to remove any mould spores disturbed and transferred during removal, then empty your vacuum cleaner.  Before decorating it is important to understand why the mould has occurred and how to stop it coming back.

Condensation 

During the colder months condensation can become  a problem in many homes. It is caused when warm moist air hits a cold surface such as a window or external wall and condenses, causing mould to develop. This can be made worse if rooms are not adequately heated and ventilated.

The water can then soak into paint or plasterwork and in time black mould may grow on the area. It normally happens during colder months and is often found in corners, on cold walls, around windows and where furniture is pushed up against external walls.

Condensation can be greatly reduced by changing what you do in your home. Drying clothes indoors can add 10 to 15 litres of water a week to the air in your home and just by breathing a family of four can add moisture to the air equivalent to 30 to 40 litres. That is why ventilation is so important.

Tips to reduce condensation

  • Though fuel costs are increasingly expensive try and keep temperatures at least 18 degrees in main living areas whilst indoors
  • Improve insulation – a privately rented property must have an Energy Performance Certificate (EPC) of A-E
  • Don’t block air bricks or air vents
  • Wipe down walls and window frames
  • Dry drying washing outside when possible
  • Try not to dry clothes on radiators. This can cause mould on walls behind radiators
  • Open window trickle vents
  • Close internal doors whilst cooking and open windows.
  • Put lids on pans (this also reduces boiling times and helps save you money)
  • Use an extractor fan if you have one.
  • Only boil as much water as you need in a kettle to reduce steam.
  • Open windows whilst bathing/showering washing and leave them open after, if it’s safe to do so.
    Take shorter showers
  • Wipe down windows/mirrors/tiles/shower doors or open windows for at least 10 minutes every day.
  • Try and leave a gap between cold walls and furniture to allow airflow
  • If you use a tumble drier, vent it outside or buy a condensing type
  • Use a dehumidifier this will assist with maintaining the humidity levels in the property and reduce excess moisture in the air
  • Run cold water in to a bath before the hot

Rising damp

Rising damp affects basements or ground floor rooms and usually rises no more than 30-60cms. Black mould can occur,  but there are often white salts and ‘tide marks’ in affected areas. It is caused by water rising from the ground through the brickwork due to a compromised damp proof course. It will be present all year round but may be worse in the winter. If left untreated it can cause plaster to crumble and wallpaper to lift. It is important that cause is identified and then addressed by a contractor.