If you have an old asphalt roof on your business that needs to be replaced, then you may be considering your material options carefully before scheduling an installation. This is wise, especially if you do not want to go to the trouble of having another roof installed within the next several decades. A steel roof is a good, long lasting option that will last you over 60 years. However, you may be swayed away from the roofing material based upon one of the many common myths floating around about the material. Keep reading to learn the truth behind a few of these myths.
Myth - Steel Roofing Is Noisy
Many people believe that steel roofs will be noisy as rain and sleet bounce off the roof. However, this is simply not true. In fact, studies show that falling rain produces about 46 decibels of sound on an asphalt roof and 52 decibels on a steel roof. If a steel roof is placed over an open frame for some reason, then sounds may be as high as 60 decibels. This sound level is about the same as the volume of your voice during a conversation, so this is not considered loud.
Steel roofs are usually pretty quiet due to the many layers that make up the roof. During a typical steel roof installation, asphalt shingles and roofing felt are torn away to reveal the plywood sheathing underneath. The sheathing is examined for wear, leaks, and other types of damage. New plywood is added to replace the damaged materials. In some cases, an extra material layer is added over the top of the plywood. Rockwool insulation may be used. This will help to reduce draft concerns if your business is located in a high wind or cold weather area. A roofing membrane or underlayment is placed over the plywood or the rockwool insulation. The metal roofing shingles or strips are placed over the top.
Myth - Metal Roofs Will Attract Lightning
Lightning will rarely hit a building. In general, the trees on your property are far more likely to be hit by lightning than your business. This is true since lightning will most often hit the tallest or highest object in the region. Lightning is an unstable electrical current that is trying to reach the earth where it can be grounded or stabilized. The quickest way to reach the earth is through the tallest object.
While metal is a good conductor of electricity, your steel roof will not attract lightning or any other electrical current. This means your metal roof is no more likely than an asphalt roof to be hit by lightning. However, if the lightning does strike your roof, the electrical current will be channeled by the steel and moved to the ground. The current will be safely discharged when this happens.
If you have an asphalt roof, then the lightning strike will cause a large burst of electrical energy to hit the roof. Electricity will not be channeled to the ground in a quick manner, because asphalt and wood are poor conductors of electricity. Energy will then be released in the form of heat, and your business can start on fire. This means that a steel roof is actually safer than an asphalt one if you are concerned about lightning and electrical storms in your area damaging your business.
A steel roof may be a great choice for your business, and you should understand the truth about these roofs before you invest in one. Speak with your local commercial roofing contractor for more information about steel roofs and how they are installed.