I have a window that was installed in a stucco wall years ago that
leaked. When the stucco was torn away around the window today, the
contractor said it leaked because the tar paper was installed wrong. It
went in front of the metal fin rather than behind it, according to him.
(It also was installed poorly with numerous tears and not much coverage
of the metal fin) Is he corrrect? Should the tar paper go behind the
metal? Seems like the metal would be left to rust that way.