 Have you ever noticed that around a chimney, sometimes you see streaking underneath it? That's because the water is connecting with the flashing, and that water then is actually acting as a mildew side after it picks up a little bit of the metal from the flashing, and that's why you get a streak. So if you put a piece of copper all the way across the top peak of your roof, it'll do the same thing. Sounds great. I'll do that. Good luck with that project. Thanks for calling us at 888-MONEYPIT.