If moisture exists behind walls or in slabs and lime is present, salt deposits or efflorescence are often not far behind. Salt can form on bricks, concrete and mortar joints if moisture is present and has the opportunity to react with the lime component of the cement, creating an unattractive, white appearance on your walls.
The moisture comes and goes as it forms and then dries. As it is forming, it draws the lime out of the concrete up to the surface. When it then dries and evaporates it leaves behind the salt which looks like a white powder on the surface. When more moisture arrives it brings more salt deposits to the surface and so on building, a white looking salt stain on the surface.
The Stain Eaters have a cleaning solution that breaks down the salt and removes it from the surface. If in an external situation, water under pressure can be used. If internal as shown in the photos of our recent job, a hand cleaning technique is safest with appropriate controls around the environment to ensure that other infrastructure is not effected.
Unfortunately, the salts will reform until the source of the moisture is eliminated from behind the wall. Surface sealers are ineffective because the moisture buildup eventually pushes the sealer off the wall.
Below is a photo of the end result – fully cleaned wall, but to as new appearance.
If salt deposits are staining your walls, give The Stain Eaters a call for a solution! Our qualified technicians will first investigate the stain to ensure that we correctly identify the cause, and then determine the correct solution to the problem.
As with all our work, removing salt deposits is fully protected by our qualifications:
- Full Certification to Quality Management ISO9001
- Full Certification to OH&S Management AS4801
- Full Certification to Environment Management ISO14001
- $20 Million Dollar Public Liability Insurance.