Roof Options FLAT ROOF Ideal for aluminum louver ceiling. Aluminum louver ceiling is consist of adjustable blades, also available with optional retractable feature. SHED ROOF It fits well with the design scheme as it imparts a very clean, contemporary, minimalist look to the structure. Maximizes water and snow drainage. GABLE ROOF It provides better ventilation and excellent drainage. ARCHED ROOF It mostly used in big structures and limited to Block Out 3 – Layer Vinyl ceiling option only.