Before you begin
This will result in extending the life of a product known to succumb to the elements, often needing replacement when not either protected or maintained. Wood is highly vulnerable to the elements, and instead of replacing a wood railing that is in decent condition, (something to be more of an eye sore) it can be nailed back into place if falling, sanded down to a healthier layer of wood, and stained/painted to protect it from weather for years to come.