A tar and gravel roof, also known as a built-up roof (BUR), is a popular option for flat or low-sloped roofs. It consists of multiple layers of asphalt or bitumen, combined with a gravel topping for added protection and durability. The layers create a waterproof barrier, making it effective for preventing leaks. This type of roofing is long-lasting and low maintenance, but it can be heavy and may require professional installation. While tar and gravel roofs are sturdy, they may require occasional repairs, especially after extreme weather events. Proper maintenance can extend the roof’s lifespan significantly.