Situation: two windows, six feet wide each, five inches apart, nominal six inch casing on each side and molding atop the casing that brings the total length to fourteen feet. The head casing/molding will be capped by metal flashing, basically z-bar coming out 2-1/2″ and going up and down 1″. I’m trying to figure out whether the flashing should be one or two pieces.
We get winter low temps in the 20s regularly, teens occasionally, with summer highs in the 90s. This flashing will be in more or less direct afternoon sunlight, and painted a mid blue.
I’ll be soldering the cornerrs/ends of the flashing. I’m wondering whether I should make this in two pieces, overlapping in the middle by about a foot (lapping to recognize the prevailing rains), or whether it’s still small enough for me to make it in one piece, making it long by 1/4″ or so at each end to allow for movement.