Basically, flat roofing involves a horizontal or level base thats fixed to the ceiling joists of a house or building. A roof slope is known as its pitch. Compared to sloped or pitched roofing, flat roofing is practically level. But a flat roof is 100 percent flat as it has a slope of about 10 degrees. The different types of roof system is Built-up roof (BUR), modified bitumen roof (MBR), and rubber membrane roof (EPDM). The reason why flat roofs can prove to be less expensive than other solutions are because they allow a quicker installation, easy maintenance, superior energy efficiency, and a longer lifespan. This makes flat roofing a smart solution for businesses in both the short and long term.