As Atlanta commercial roofing professionals, we know many business owners know of one of the oldest types of roofing used in the U.S. for commercial or industrial buildings, tar and gravel. Whether you have a building under construction or are considering replacement, it’s important to know of the potential problems you could face with a tar and gravel roof.
First off, it’s important to know how any roofing system works. With a tar and gravel roof, there may be several layers of bitumen and reinforced fabric, followed by a layer of stone or rock which works to resist wind damage, insulate, and protect the layers below from UV rays. Sounds good, but what are the potential issues you could face?
Maintaining your roofing system isn’t easy. Because of the gravel (rock, stone, etc.) it’s difficult to determine what’s going on in the layers underneath. When you have a leak or suspect damage, it may be necessary to have your roofing contractor shovel or vacuum the gravel in order to determine the problem.
Mold can be an issue. Flat roofing systems may be prone to mold because of water that stands and cannot drain as it would with a pitched roof. With an added layer of gravel, this problem becomes even more serious, as water becomes trapped in all of the layers below, which makes the evaporation or “drying out” process a long one. This can result in mold growth.
Break down of gravel over time. Whether due to foot traffic from inspection and maintenance, weather conditions, or the passage of time, the stones in gravel break down over time from simple wear and tear. This means the layers beneath the gravel become exposed to the elements, and are more susceptible to damage.
What is the best type of roofing system for your Atlanta business? At Kelco Roofing we’ve been in the business of installation, replacement, repair, and evaluation since 1973. We know a commercial roof is a big investment, and its importance of protecting the structural integrity of your business. Contact our commercial roofing professionals with any questions or concerns you may have!