Causes of deterioration of mural paintings

I. Causes of change:

  1. Instability of the materials
  2. Faulty application of techniques
  3. Lime washing and over painting
  4. Exposure to extremes of humidity
  5. Water soluble salts
  6. Exposure to dehydration
  7. Atmospheric pollutants
  8. Frost action
  9. Biological action
  10. Minor physical causes
  11. Uncontrolled artificial heating
  12. Defective restorations
  13. Changes characteristic of different types of rendering

II. Control:

  1. Water, the universal catalyst
  2. Survey and measurement of humidity and temperature
  3. Instrumentation
  4. Humidity control