photos by Henri de Marne by Henri de Marne As with virtually everything in life, in most phases of construction there are right and wrong ways of doing things—and usually more wrong ways than right. That applies to roof flashings as much as anything else. With this in mind, let's look at some of the most common problem areas and examine how to prevent (or cure) them with as few headaches as possible. Chimneys It probably goes without saying that chimney flashings must be done in two parts. But I've seen many single-piece flashing systems in my consulting and inspection business, and they spell trouble. By single-piece chimney flashing, I mean metal flashing embedded in the mortar joints that