A tar and gravel roof, also known as a built-up roof (BUR), is a durable and cost-effective option for flat or low-sloped structures. It consists of alternating layers of tar and fiberglass or felt, finished with a layer of gravel to protect against UV rays and weather elements. The gravel layer adds weight and stability, making the roof resistant to strong winds and minor impacts. Th... https://managemyroof.com/tar-and-gravel-roof/