The house I moved in to last year has cedar siding in poor condition on the sides facing south. I'm planning on residing the house in Dryvit and was concerned about wood peckers attacking that as well (they will).

We have an ample wood pecker population judging by the constant hammering in the woods around us but I've been looking for signs of them on our house since we moved in and there are none.

Fortunately, we also have an ample population of Owl's and the wood peckers seem to shy away from operating in open spaces on the houses in our neighborhood.