Rising Salt Damp

Rising Damp becomes Rising Salt Damp when salts are present in the soil and are drawn up with the moisture. In Australia Rising Salt Damp is particularly prevalent in Adelaide and around South Australia where it is referred to as Salt Damp due to the high salinity in the soil. On the Eastern seaboard and in the West where the soil contains less salt it is more commonly referred to as Rising Damp.

Rising Salt Damp or Salt Damp is more serious than rising damp as the salts, which are present in the structure, will cause hygroscopic dampness by attracting moisture from the air. When hygroscopic damp has taken hold in a wall it becomes a cause of ongoing dampness in its own right and can therefore continue to be a problem even though the rising damp has been rectified. With Rising Salt Damp it is imperative to treat the salt damp in the walls with either DRYZONE or DRYROD as soon as it is evident. Like cancer in humans the sooner the problem is addressed the better to avoid ongoing deterioration of the masonry. In dry conditions the salt molecules in the wall contract and in humid or damp conditions they attract moisture from the air and expand and it is this continual movement with the salts that is the reason that masonry will eventually crumble.

Fixing Rising Salt Damp

  1. Treat the wall with either DRYZONE or DRYROD as per the instructions found by visiting www.dampbusters.com.au to prevent any further ingress of moisture and/or salts rising into the wall. DRYROD in particular is suitable for DIY application thereby offering considerable savings of over 60% on professional application.
  2. If the wall is rendered it is recommended to leave the existing render on the wall for at least 6 months so that it will act as a sacrificial poultice drawing out residual salts and moisture.
  3. If the wall is not rendered it will dry out over a period of time dependent on weather conditions.
  4. If Re-plastering introduce a moisture/salt retarder into the mix to prevent any possible damage from any residual moisture and/or salts.
Further Technical Advice

If you have any further technical enquiries or have further questions about the installation process, please call 1800 234 388.