Georoof Regular is a revolutionary Alu- Zinc Roofing Sheet with the best of design and perfect finish. Quadra-Layered Composition Of Sheets Four layers go into the making of a GEOROOF Alu-Zinc roofing sheet. Layer one comprises of a precisely thickened base metal. A high quality Alu-Zinc and polyester primer coating form the second and third layer. The topmost layer offers an extremely durable colour coating. The result being an aesthetic and strong roofing sheet.