Gather all materials first, then remove old flashing Pry, chisel and scrape off old metal flashings and roofing cement. Before you do anything, get your ladder, roof brackets and safety harness set up ...

Frame the window openings as you’re framing the walls. To find the size of the openings, measure the windows and add 1-1/2-inches to the width and height. This leaves space on all sides of the windows ...