Hi all. Just started working on the exterior of my new pre-1900 house, washing and scraping paint on the back where I just demo-ed a old porch/shed. Anyway, there are some spots that are bare wood (maybe never painted) some sections where the paint came off so easily there are more bare spots and other parts where it'll take a little more work/time to get the paint off and/or get the surface smooth. My question is: should I grab some primer to protect the bare wood now instead of waiting until the entire wall is ready for painting and if so, or whenever I prime -- what's the best primer? Sorry, I don't have pics since I started working on it. I'll try to get some tomorrow. Below is what it looked like before I started. (ignore the pipe) -- that light part is bare wood.