A flat roof is a type of roof that has a very low or completely level slope (usually less than 10 degrees). Unlike sloped roofs, which use gravity to shed water and debris, flat roofs require special materials and techniques to prevent water accumulation and leakage. Flat roofs can be made of a variety of materials, including built-up roofing (BUR), modified bitumen (MB), single-ply membrane (SPF), and more.

Flat roofs are popular in both residential and commercial settings for a number of reasons. First of all, flat roofs provide a sleek, modern, and uniform appearance that can enhance the aesthetics of any building. Additionally, flat roofs offer a wide range of customization options, such as rooftop gardens, outdoor living spaces, solar panels, and more. Finally, flat roofs are often less expensive and easier to install than sloped roofs, making them a popular choice for new construction and remodeling projects.

However, flat roofs also come with their own set of challenges and considerations. Because water does not naturally flow off of flat roofs, special drainage systems, insulation, and ventilation are necessary to prevent moisture buildup, mold growth, and structural damage. Additionally, flat roofs require regular maintenance and inspections to ensure that they are free of cracks, potholes, punctures, and other forms of wear and tear.