Surface Protection and prep
BUY SURFACE PROTECTION MATERIALS
Tape and drape
Ram board tape
SURFACE PREP ON WALLS.
After every thing is protected properly the cleaning of any surface to be painted is required. You can't paint over grease and dirt. once the surface or wall is clean sanding should begin especially if the old paint is oil based or has a shine to it like satin, semigloss, or eggshell, sanding the shine off helps promote adhesion. after sanding is done you may apply primer if paint was oil based use an oil based primer, if its water based paint use regular water based primer, primer is required to add hide to the previous color and also promotes adhesion. after primer is applied and dry painting can begin.