Prepare your walls properly before painting. Just follow these steps to help you save time and effort.
Use a scraper to remove and loosen paint film. Then use sandpaper to smoothen the surface. Dust off.
Clear the wall of popped nails and use a filler to fill holes.
Use the proper filler to cover cracks and crooked surfaces.
Use fine-grit sandpaper to flatten rough spots.
Clean surfaces to be painted with water. Dry the surfaces thoroughly before painting.
Before painting, use a wall sealer to neutralize the alkali on the walls.