What is Damp?


The musty smell and the damage that damp can cause is awful. Below you will find a guide to preventing it in the first place and how to get rid of it once it has arrived. If you are confused and want to talk to someone then please do call us on 01483 234900.

Damp means different things to different people

Damp can be a musty smell in the air, mould appearing on walls, a tidemark on the wall, a cold feeling when you touch the walls, brown patches on the floor, walls or ceiling or condensation. If your problem is condensation then follow this link.

In essence there are three types of damp

  1. Rising Damp
  2. Leaks
  3. Condensation


Brown tidemarks, cold feeling on the wall

The above will normally stop at about one metre from the ground and only happen on walls that are in contact with the ground (this can be internal walls as well as external). This is called Rising Damp and is caused by the Damp Proof Course (DPC) either missing fully or partially and the brickwork coming in to contact with the soil.

The brickwork sucks up the water and this causes the damp marks on the wall. You will need to contact a surveyor to get the DPC fixed but the resulting work will be expensive and will take time to plan and execute. In the meantime a dehumidifier will dry the air in the room which will mean that the wall will then realise the moisture that is is holding into the room for the dehumidifier to suck in and process. Although the wall will start to suck water up again from the ground and the process will become cyclic, the dehumidifier will help to control the problem until the DPC can be fixed.

If a brown patch appears in the middle of a wall or on an wall not in contact with the ground.

This will be a leaking pipe and will need immediate attention from a plumber to find the source. If you do not cure this problem ASAP then at worst a ceiling could collapse! In the meantime a dehumidifier will help to dry out the effected area.

Anything else is caused by condensation and lots more information can be found here

The smell

Once you have identified and dealt with the causes of the damp then the smell will go as well. It is vital to remove the cause as soon as possible because the mould spores that come with damp are damaging to your health.

The solution

Regardless of the cause of your damp problem it all comes back to an excess of moisture and a dehumidifier can either solve the issue completely or bring the moisture under control until you have an opportunity to bring the structural problem under control. Details of our domestic dehumidifiers for the home can be found here.

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