I'm about to paint the inside faces of my fascia boards (I believe that's the correct term), because only the outside faces were painted, and I was told painting the insides will help with water damage a little. But as you can see in the pics, there are areas of the roofing that are damaged, I believe from water. Should I simply remove and cut off the loose wood, and then paint over it completely? Or should i treat it with something else first, like some kind of wood filler, and then paint over that? Thanks for any advice!