How to deal with salt contamination in the background?

This is usually due to prolonged condensation or damp within the building and this will need to be resolved after identification the route of the cause. This could be maintenance such as gutters or down pipes, ineffective damp proof course (DPC), or poor design.

Once the issue has been resolved the use of an independent wall lining using the GypLyner Independent system may be a better solution than plastering.