Corrective Measures for High Moisture Readings in Internal Walls

Monitoring internal wall moisture levels is crucial for maintaining structural integrity and preventing damage. When moisture readings exceed the recommended levels, corrective measures must be taken to address the underlying cause and mitigate the effects of excess moisture.

Recommended Moisture Levels

The acceptable moisture content for internal walls varies depending on the material used. Typically, the following readings are considered acceptable:

  • Gypsum board: Less than 15%
  • Plasterboard: Less than 10%
  • Timber framing: Less than 20%

Causes of High Moisture Readings

Several factors can contribute to elevated moisture levels in internal walls:

  • Water leaks from plumbing fixtures or roofs
  • Condensation due to poor ventilation or inadequate insulation
  • Rising damp from the ground
  • Penetration of water through the roof or external walls

Corrective Measures

To effectively address high moisture readings in internal walls, the following corrective measures are recommended:

  • Identify and repair the source of the moisture infiltration.
  • Install dehumidifiers to reduce humidity levels.
  • Improve ventilation by installing exhaust fans or opening windows and doors.
  • Insulate external walls and roofs to prevent condensation.
  • Inspect and seal any cracks or gaps in the walls or roof.
  • Implement a water-resistant membrane system to prevent rising damp.
  • Remove and replace any wet or damaged drywall or plasterboard.
  • Dry out the affected area using fans or dehumidifiers.
  • Monitor moisture levels regularly to ensure they remain within acceptable limits.

Conclusion

By implementing appropriate corrective measures, it is possible to mitigate the effects of high moisture readings in internal walls and restore their structural integrity. It is crucial to address the underlying cause of the moisture infiltration and take necessary steps to prevent future occurrences.