Should I scrape a patch to show the material?
Leave weak finishes undisturbed and describe what is visible. Further access or investigation should be discussed rather than improvised for the enquiry.
Will treatment make the wall look freshly painted?
A new finish should not be assumed. Describe damage or staining and clarify suitable treatment and any separately required decoration.
Does peeling paint prove a particular leak?
Report timing and moisture observations. The finish alone does not settle the cause, so appropriate assessment should consider relevant source questions.
Can earlier sprays affect the enquiry?
Give product names, application areas and changes afterwards where known. Keep the current condition clear instead of adding another improvised treatment.
Is replacing plaster part of surface work?
Replacement and repair need separate clarification. Ask which tasks are actually included and who will undertake further property work.
What if marks return after the wall looks better?
Record and report them with dates. Appearance alone does not establish all moisture concerns resolved or recurrence prevented.