Measure 2 feet up from the bottom left-hand corner of the roof and snap a chalk line across. Metal roofing is 2 by 4 feet and will fit along the chalk lines. Move up 2 more feet and snap another line. Continue up the roof until a chalk line has been snapped across the roof every 2 feet.
Line up the first piece of metal roofing horizontally in the bottom left-hand corner of the roof. Hammer in roofing nails through the metal and into the sheathing underneath. Space out the nails every 2 feet around the first metal piece.
Line up the second metal piece and overlap it horizontally by 3 inches. Install it in the same manner and continue down the roof until the first row has been installed. Cut the end piece to size with tin snips if necessary.
Set the first piece of the second row above the first row and overlap it by one ridge on the metal roof. Nail it in place and continue the installation process in the same manner up the hip roof until it is completely covered .
Install lap screws on each slope of the hip roof along the bottom and sides around the perimeter. Drill in the lap screws spaced every 12 inches around the perimeter of the roof to hold it in place. Inspect the roof to make sure there are no nails or screws sticking up.