Let’s go with CUNMAC to discover the key facts about Trapezoidal Roofing Sheets – their names, materials, applications, common profile drawings and how to produce them. 1. What are trapezoidal roofing sheets? Trapezoidal roofing sheets are shaped like a trapezoid, available in various colors. They go by different names in different countries: Rib-type, Spandek, Trimdek, […]