As well as installation methods and materials, including edge metal, flashing, coping, gutters, crickets, valleys, ice & water shield, pipe boots, ridge/hip caps, curbs, and soldering techniques; ability to read shop drawings, layout roofs and walls, and reproduce manufacturing details. Project & Materials Management: Ability to calculate labor projections, stretch outs, and material needs; manage material storage and inventory; and use measuring tools accurately for layout and installation.