The accepted ceiling must be dry and stable. Ongoing leaks, sagging, hazardous material and structural concerns need appropriate separate assessment. A stain is not diagnosed from a photograph, and a coat of paint should not be offered as a remedy for its unresolved source.
The existing finish, colour and selected product affect preparation and application stages. Discuss the complete system before supplying paint. Extra coverage may require a different plan, and applying a heavier coat is not a substitute for following drying and recoating instructions.
Furniture and occupied-room access need planning around protection, ventilation and drying. Identify rooms that must remain available. Completion of application does not necessarily mean immediate ordinary use; reopening follows the selected product and actual conditions.
Protect the room and fixed fixtures, prepare the accepted sound surface and paint the agreed ceiling plane in suitable stages. Scope limits: Ordinary dry stable accessible ceilings only. No electrical fixture work, leak diagnosis, sagging ceilings, high-access specialist work or hazardous materials.