Flat roofs are the most common type of roofing used on commercial buildings. They are used on low-sloped roofs with a pitch of less than 1:40 (four inches per foot). Flat roofs are solid and durable, but they must be maintained appropriately to avoid leaks or other damage.
Flat roofs are generally considered the most economical choice for commercial buildings, providing a large amount of usable space. They also do not require any complicated structural elements, such as gables or dormers, which can add to the cost of installing other types of roofs.
The main disadvantage of flat roofs is that they require more extensive maintenance than other types of roofing. You need to hire a professional roofing company like Excel Renovation to maintain your roof.