How to Identify What Type of Damp You Have

30 Jan How to Identify What Type of Damp You Have

Rising damp, penetrating damp and condensation are the three most common damp problems in houses. Each needs to be treated in different ways, and damp removal and damp repair costs can vary dramatically, so it’s important to know what type of damp is affecting your home before you try to get it fixed. Take a look at our handy checklist to find out how to identify damp and whether damp proofing treatment is required.

Do I have penetrating damp?

Common signs of penetrating damp include:

  • Blotchy patches on internal walls
  • Plaster and paint deterioration, blistering, the appearance of stains and salts
  • Rotting skirting boards or timber
  • Excessive moss growth on external walls
  • Moisture entering the brick (known as spalling) causing surface damage
  • Damp staining on external walls
  • Wet and crumbly plaster



rising dampDo I have rising damp?

If any of the following sounds familiar, you may need rising damp treatment:

  • Damp patches that start at the base of a wall and gradually move upwards, in a vertical fashion
  • Skirting boards or plaster that is damp or rotting
  • Floor coverings, such as tiles, vinyl or carpet, that are wet and lifting
  • Peeling paint or wallpaper
  • The appearance of a white, powdery salt-like substance on a wall
  • Yellow or brown tide marks or staining on a
  • wall



condensationDo I have condensation problems?

If you have any of the below it might be worth looking at condensation damp treatment.

  • Streaming windows
  • Damp patches on walls, especially behind furniture and in corners
  • Wallpaper that is starting to peel off
  • Black dots on window frames
  • Mould growth (usually black mould) starting to appear
  • Soft furnishings and fabrics become prone to mould and mildew


If you have damp in your house, Prokil damp specialists offer a free, no obligation damp survey.

We have over 50 years’ experience with over 8,000 happy clients so far. Book your damp survey online or give one of our experienced home ventilation specialists a call on 01202 515566 or email.

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