Does a repaired leak mean every layer is ready?
The present material condition is a separate question. Explain the repair and remaining observations rather than assume all hidden material is sound.
Can a stain persist after the water source stops?
Describe the unchanged appearance and any new wetting separately. Inspection can consider the current concern without treating colour alone as a diagnosis.
Should I make the patch wet before a visit?
Do not recreate suspected damaging water entry. Share normal observations, dates and photographs instead.
Can condensation and a past leak both matter?
Give the separate observations and histories. One explanation should not automatically replace the other without appropriate evidence.
Is plumbing repair part of mould treatment?
Do not assume it is. Identify any repair requirement and clarify who will carry it out and the separate agreed scope.
What should I retain after work?
Keep the included treatment, instructions and repair details with the affected position and photographs, so any later enquiry addresses the same concern.