Commercial flat roofs are not entirely flat, with about a 10-degree incline, and have architectural influence from Egyptian, Persian, and Arabian styles. These roofs are more cost-effective than other roof types simply because they require less material, which generally means a quicker installation. Flat roofs tend to be stronger than pitched-roofs. They offer a bit of diversity because the even surface enables use for installing solar panels, roof gardens, roof pools, and decks. There are several color options, but white is the most common color used because of its light-reflecting and energy-saving properties.
Maintenance is the easiest with a flat roof since it is accessible to workers. Workmen can efficiently walk around to perform drain cleaning.
Although the roof is at a slight angle, the largest issue is draining. Large amounts of water can accumulate, which deteriorates the roofing material. This concern can be alleviated by installing automatic siphons for ponds in the center point of the roof because it acts as a vacuum for water that was never drained.