I am a DIY'er and sharing my experience. My roof has been great but I was really just doing a maintenance recoat, not fixing a leak. I recommend speaking with a professional roofer.
I prefer to leave stucco unpainted like I did in my new construction. BUT this house was already painted and I am painting it as we speak. Sherwin Williams loxon primer with duration outdoor flat latex. Turning out great. The only thing better would have been to leave the stucco unpainted and keep it clean so it is a maintenance free finish.
Perfect. 0 issues and we got hammered with 5 inches of rain and 40mph winds in the past 2 weeks. I was just up there looking at the solar I did shortly after this.