Plastered or unplastered. Regardless the surface if you want to know what our experts suggest have a look at these guidelines.
Determine the condition of the surface and what type of paint was previously used.
Ensure that the condition of the substrate is sound e.g. cement plaster is not friable.
Where walls are sound and moisture content is 15% or less.
Test all surfaces with a moisture meter. If moisture is 15% or less, then:
Determine the condition of the surface and what type of paint was previously applied.