The pre-painting procedure for interiors includes the following steps:
1) Check the surface for dampness or water seepage.
2) Rectify the water seepage problem at the source. This could mean repairing leaking plumbing or cracks in the exterior walls.
3) Any loose plaster should be removed from the wall. Look for loose plaster by tapping on the walls.
4) Undertake masonry work to fill up all cracks and repair broken plaster.