Tag: how to avoid damp

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What is rising and penetrating damp?

Damp takes on a few different forms and can affect almost any type of property. Rising damp is when water from below a building rises through porous materials, such as bricks and mortar. When houses are built, they have a damp course laid within the walls near to the ground to prevent rising damp but it can fail over time, allowing rising damp to happen.

Penetrating damp is caused by issues such as leaky guttering, cracks in external walls and faulty roofing, all which allow water to seep through into a property.


Condensation appears when excess moisture in the air comes into contact with a cold surface, so you’ll likely have seen it on cold walls and windows. It can lead to mould growth and tends to be worse in winter. It can be caused by poor ventilation, poor insulation or faulty heating and ventilation systems in the property.

What causes mould?

All of the above issues can cause mould to grow. Damp that is left untreated or if the type of damp isn’t properly diagnosed can lead to mould in a property. Mould is a fungus that can affect people’s health and can appear in a variety of colours and textures, depending on the type of and extremity of the damp causing it. It could be green, fuzzy, black or even blue.

What responsibilities does a landlord have?

Because there are different causes of damp and mould, tenants and landlords can have difficulty deciding who is responsible for fixing the problem. The repairing obligations will be set out under the relevant Tenancy Act (Landlord and Tenant Act 1985 or where applicable the Agricultural Holdings Act 1986) which have slightly different responsibilities. However; Generally defects and repairs of the structure and exterior of the dwelling-house will be the landlords’ responsibility.

When damp is caused by condensation, it is usually because the property needs to be properly ventilated and heated. If this isn’t due to faulty heating systems or windows, the tenant needs to make some changes to help alleviate the problem. For example, cooking, hanging washing inside or taking a hot shower all create high amounts of moisture and can cause a lot of condensation.

Landlords should also be aware that treating damp is a mandatory repair under the Housing Health and Safety Rating System (HHSRS).


To beat condensation, the three main steps are:

• Improve ventilation;
• Consider your heating and insulation; and
• Clear any condensation that does form.

A landlord should also make sure that that the roof, guttering and drains are all kept in good working order, particularly after heavy rain, storms or snow.

Some other tips include:

• Wipe down windows and sills every morning;
• Deal with steam from cooking by using an extractor fan and always cover pans and pots when cooking;
• Get rid of bathroom moisture: keep the door of the bathroom closed and open a window when showering;
• Open a window for at least 15 minutes each morning;
• Keep a property evenly warm, especially during the colder months; and
• Don’t hang clothes to dry indoors.

For more information or to speak to our Residential Lettings team to find out how we can help you, please call 01234 351000.