It’s finally time—you absolutely must do something about that old, discolored stucco. But, is it necessary to paint it? Is it even advisable? Basically, you have three options: pressure washing, re-stuccoing, or painting. You can stucco over existing stucco only if you haven’t painted it already. This option is the least utilized of homeowners with stucco exteriors, mostly because the process is complicated, costly, and typically lengthy.