Damp, mould and condensation

Condensation occurs when the air, and/or surfaces, are cold, and when the moisture content of the air is high. Lack of air movement tends to be in corners, on or near windows, in or behind cupboards or wardrobes.

There is always some moisture in the air, even if you cannot see it. If the air gets colder, it cannot hold all the moisture and tiny drops of water appear on cold surfaces, typically windows, which can lead to black-spotted mould growth.  It often forms on north-facing walls.

If you are having issues with dampness and condensation in your home, a dehumidifier can make a big difference. Dehumidifiers are not expensive to run, and running them all day will still only add a few pence to your energy bills.​

As a tenant, it is your responsibility to manage the amount of condensation produced in your home.

Mould is a natural organic compound that develops in damp atmospheres. It is often a consequence of water penetration and/or condensation in homes that are not adequately heated and/or ventilated. Mould will only grow on damp surfaces, and in most cases, this is a direct result of condensation.

If you have damp and mould in your home, you are more likely to have respiratory problems, respiratory infections, allergies or asthma. Damp and mould can also affect the immune system.

Mould growth can produce allergens (substances that can cause an allergic reaction), irritants and, sometimes, toxic substances. Inhaling or touching mould spores may cause an allergic reaction, such as sneezing, a runny nose, red eyes and skin rash and can also cause asthma attacks.​

As a tenant, it is your responsibility to manage the mould in your home in the first instance.

Damp can cause mould on walls, windows, and furniture. Damp and cold homes encourage the growth of mould and result in mites (which feed on mould) and can increase the risk of respiratory illness. It can be caused by:

• Condensation created by high levels of moisture in the air.
• Leaking pipes, wastes, or overflows.
• Rain seeping through the roof where a tile or slate is missing.
• Blocked guttering, cracked or loose rainwater pipes.
• Rising damp due to a defective damp course, which will create a yellow tide mark on internal walls.

You can help manage condensation levels, but contact us if Damp is from another source.

First, treat the mould already in your home. If you deal with the basic problem, mould should not reappear. If you have mould growth, it should be removed as soon as you see it.

Wipe down walls and window frames with soap and water or a fungicidal wash and dry the area thoroughly. Do not brush or use a vacuum as this can disturb the mould spores.

Dry-clean mildewed clothes, and shampoo carpets. Disturbing mould by brushing or vacuum cleaning can increase the risk of respiratory problems.

After treatment redecorate, using a good quality fungicidal paint to help prevent mould. Note that this paint is not effective if overlaid with ordinary paints or wallpaper. When wallpapering, use a paste containing a fungicide to prevent further mould growth.

The only lasting way of avoiding severe mould is to eliminate dampness.

Insulation in the loft and cavity wall will help keep your home warm and reduce your fuel bills as well.  If you feel your loft or cavity wall is not insulated sufficiently - please contact us.

In cold weather, the best way to keep rooms warm enough to avoid condensation is to keep low background heating on all day, even when there is no one at home.

If you have central heating, set it to provide background warmth to all rooms including unused rooms. If fitted, use thermostatically controlled radiator valves (TRVs). The thermostats will help control heating and costs. If your radiators do not have TRVs - please contact us.

If you need help with your utility bills, please contact our Money Advice Team or by calling 01386 420800.