There are several reasons and not all are due to rising damp. By far the most common cause of damp in a property is condensation, which is usually brought about by the lifestyle of the occupants. No damp should be ignored because it will get worse and soon attract spores, such as dry rot, that will attack damp timber. It is a good idea to seek professional advice but before you do, here are some questions to consider.
Are the walls only damp in winter or when the outside temperature drops? Is there black mould on the walls or mould on your clothes in the wardrobe?
This is condensation caused by high humidity and is often caused by the lifestyle of the residents. Measures to reduce this need to be immediately carried out, such as keeping the property constantly warm and adequately ventilated.
Is the damp high up on the wall or in the room above? Is it affecting the edge of the ceiling?
This is likely to be rain penetration due to an external building defect such as a leaking down-pipe or guttering, blown or cracked rendering or defective pointing. Check by tapping the rendering with a hammer (to see if it is hollow) and check the rainwater guttering and drainage (when it is raining) for signs of leaking.
Is the ceiling showing signs of damp? Do the stains appear to be getting bigger? Is the problem below a bathroom or kitchen?
It is possible that there is a plumbing leak. Plumbing directly above should be checked and immediately repaired of necessary.
Further Q&As checklist
here.
Always seek professional advice to determine the exact cause and the correct remedial action. Use an experienced, qualified firm of surveyors belonging to the Property Care Association, such as
Tapco HomeDry. Nobody wants a damp problem but when dealt with promptly, it will be less damaging and less expensive.
