Top Terrace Roofing Contractors in Chennai A-Frame / Gable Roof: The most common design for homes. It offers excellent rainwater runoff and high ceilings for ventilation. Arch Type Sheds: Often used for car parks or small balconies; these use curved polycarbonate sheets for a modern aesthetic. Lean-to Sheds: A simple single-slope roof that leans against an existing wall. Ideal for narrow balconies or side walkways. Retractable Roofing: A premium option (manual or motorized) that allows you to open the roof during pleasant evenings.