I'm doing my pre-paint prep for the exterior siding (belt sanding the boards). I'm wondering what to do with nails pushing back out of the siding. Some stick out enough to break the paint suface, other stick out 1/4 to 1/2 ". This house is 60 + years old. And nails have always been a problem. I was thinking about using Sherman Williams Duration paint. This stuff is near $40.00 a gallon. But, it is self priming. (I'm going to check on this). I would hate to put on good paint only for the nails to pop through it in a year or two. I was thinking about replacing the nails with gal. wall screws. What do you think about this?