Maybe you could try putting an owl or peregrine decoy on your roof or a ledge near the damaged area. Or if you want to be really realistic, put one in a nearby tree. I don't know if this will work for woodpeckers, but it seems to keep the gulls off the roofs at the beach. If you ever have trouble with something trying to nest in a part of your house, just put a fairly large and realistic looking rubber snake there. My dad used to keep them hanging from the rafters of his pontoon boat, and we never had birds, squirrels, or insects nesting under the collapsible roof. I doubt that the snake option would keep the pileated's away, unless they excavating for a nest, but its a inexpensive experiment. Chris Taylor Reston, VA