Rising damp patches in walls are a common issue which is hard to detect. These patches can cause damage such as corrosion and mould growth, and so should be treated immediately if possible. Early signs of this damage can include dark discolouration on the outside of a wall, water stains where it seeps through the plasterboard or timber battens, and mould growth around windows even when they are closed. Click here https://advanceddamp.co.uk/blog/rising-damp-patches-on-internal-walls/ to know more.

What causes rising damp?

Rising damp is caused by a build up of moisture in the ground outside rising up through the foundations. The moisture enters the walls and creeps along them until it comes into contact with a source of warm air. This causes it to condense and form a patch of damp on the inside of the wall. It will remain until something is done about it, causing damage as it does so.

What are some typical signs?

basement tanking

It is not that common to notice water stains from rising damp on the wall surface, this is often only an issue with timber structures. Glass can be a good way to look at the walls for signs of stains or mould growth. A window may be permanently damp, or it might only be moist on sunny days. A leak inside the structure can come from a source such as a pipe or gutter, a wet window sash or door lock, or a cavity in the wall containing water. If a part of the wall is dry many days of high humidity may not cause any signs at all. The only way to know for sure what is happening inside the walls is to have them inspected.

How do I prevent rising damp?

The best way to prevent rising damp is to ensure it does not happen in the first place. The best way of doing this is to install extra drainage around any downpipes and foundations, for example by putting guttering and downpipes in as well as ensuring there are enough pipework vents. If you already have rising damp then you may wish to have a damp proof course installed. However, this can be expensive and can take many weeks if the problem is severe.