Preparing stucco for paint is basically the same process and preparing any other surface. Before you begin, evaluate whether your stucco is smooth or textured. This determines how much preparation it will require, especially in cleaning the paint surface, since textured stucco requires a bit more attention.
Step 1 - Fill Cracks
If the stucco has any cracks; fill these before you do anything else. This can be done with what is called stucco patch. If the cracks are quite wide, add stucco material strengthened with masonry glue.
Step 2 - Clean the Surface
It is important to clean the stucco wall properly before you do any stucco painting. Remove any dirt, mildew or grease. Start by using water with a low-pressure spray. If this does not clean it sufficiently, use an eco-friendly cleaning agent to clean off all dirt.
Step 3 - Paint the Stucco
Painting can begin as soon as you are sure the paint area is thoroughly clean and that all cracks and caulking are taken care of. Because you do not need to use primer, choose a paint which is specifically designed for stucco. This kind of paint is quite thick and also has some elasticity to it so it provides exceptional coverage.