The nails were removed from the bottom flange of each window and flashing was slid behind the flanges.
Flashing tape was installed around the rest of the window. Because the house's 2-foot roof overhangs go a long way toward protecting these windows from moisture intrusion, no supplemental drip cap was added over the windows.
On these installs, the first sheet is checked for plumb, then it and the next sheet or two are tacked into place so they can be adjusted if the panels start to run out of line.
Stud locations were marked on each sheet before it was installed. Once the sheets were in place, vertical lines were drawn at the marks to guide nail placement.
On the part of the house with two stories, the bottom sheets were installed first, topped with metal Z-flashing. The top sheets rested on the flashing.