Cleaning kitchen walls before paint application is a must in order for the paint to stick properly and to look good.
In addition to cleaning, you will need to fix any surface flaws so that your final look is smooth.
The first step is to remove everything from the walls - all pictures and any nails left in the walls.
Also scrape off any loose or peeling paint.
Remove any light switch covers or electrical outlet covers and doorstops.
Fill any holes or cracks with putty (you can mix in some of the paint you will be using so that it won't show up as much
when you finally add the paint). Let the putty dry and sand so that it is smooth.
Cleaning kitchen walls before paint application includes not only cleaning the walls but treating any nicotine or other
stains as well. If you do not, they could bleed thorough your new paint. Try washing the walls with soaps and water and if
that does not remove the stains, try using Trisodium Phosphate (TSP). If you have mold on your walls, try adding some bleach
to the mix and remember to rinse the walls well.
Finally, you will want to sand any shiny spots on the wall and be sure to brush away the dust.
You may want to prime any newly patched areas before you start to apply your paint.