Damp Proofing - There are generally three different types of Damp - rising damp, penetrating damp and condensation. They all cause different problems and need to be dealt with differently.

Rising damp - Rising damp is caused by ground water moving up through a wall. Most walls allow some water in, but it’s usually stopped from causing damage by a barrier called a damp-proof course. This is usually a horizontal plastic or slate strip in the wall.If this is missing or ineffectual, your wall may suffer from rising damp. This type of damp can also happen when the level of the ground outside your home is higher than your damp-proof course, allowing water to get above it.

Symptoms of rising damp - If you have rising damp you may notice damaged skirting boards and floorboards, crumbling or salt stained plaster and peeling paint and wallpaper. There may also be a tide mark along the wall. 

Penetrating Damp - Penetrating damp is caused by water leaking through walls. This type of damp may move around within a building, but this is through horizontal movement rather than by travelling up walls . Penetrating damp is usually caused by structural problems in a building, such as faulty guttering, roofing or failure to a tanking sytem.

Symptoms of Penetrating Damp - Penetrating damp often shows up through damp patches on walls, ceilings or floors, which may darken when it rains. You’re more likely to get penetrating damp if you live in an older building with solid walls, as cavity walls provide some protection. 

Condensation - Condensation is the most common kind of damp and is caused by moist air condensing on walls. It's mainly a winter problem, as at this time of year walls are much colder than the air inside. Condensation can be exacerbated by poor ventilation, and heating that comes on and off, as this allows warm, damp air to condense.

Symptoms of condensation - You may notice water droplets on windows or walls, see dark mould appearing and/or notice an unpleasant smell. If left untreated, condensation can damage paint and plaster and cause window frames to decay.

If you are experiencing any of these problems or require help or advice please contact us for a survey & quotation.


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