The answer to 'what is a flat roof' is a type of roof that has a low slope, typically less than 10 degrees. Flat roofs are commonly used on commercial and some residential buildings, as they provide a large, open surface area that can be used for various purposes, such as rooftop gardens, solar panels, or HVAC equipment. Unlike sloped roofs, flat roofs rely on a slight pitch to allow water to drain off, preventing pooling and potential leaks.
Flat roofs are typically constructed using materials such as modified bitumen, single-ply membranes (e.g., EPDM, TPO, PVC), or built-up roofing systems. These materials are designed to be durable, waterproof, and able to withstand the elements. Proper installation and regular maintenance are crucial for ensuring the longevity and performance of a flat roof.