What Is a Rock Roof
A Built-up Roof (Bur), Sometimes Called a Tar-and-Gravel Roof, Is a Tried-and-True Style of Flat Roof. … a Layer of Gravel, or Small Stones, Is Applied on Top...
A built-up roof (BUR), sometimes called a tar-and-gravel roof, is a tried-and-true style of flat roof. … A layer of gravel, or small stones, is applied on top of the final coating of asphalt to protect the roof from the elements, including ultraviolet (UV) rays and hail.
Why do they use gravel on roofs?
Gravel is added on top of tar (and sometimes Single-Ply EPDM) roof systems as protection from UV rays, foot traffic, and wear from weather. If the gravel stones break down, they become less effective and leave your important roof layers prone to wear and damage.
Are rock roofs good?
Of all the flat roofing options, a tar and gravel roof is the most budget-friendly and can have a lifespan of up to 30 years with regular maintenance and repair. It provides excellent protection against UV rays, it is energy efficient and is a great option for windows and decks that overlook the roof.
Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.
