The geographic location of your building will determine its safety from lightning strikes. For instance, if your building is located in southern Ontario, Windsor, Toronto, or Hamilton, chances that your home will get a lightning strike are higher than if it was located in Vancouver.
Land located in the tropics is more susceptible to lightning strikes than those in Arctic and Antarctic areas. Most people assume that since a metal roof is a good conductor of electricity, it will attract lightning strikes. However, that is a misconception based on intuition and not on facts. So, what happens when lightning strikes a metal roof? When lightning strikes a metal roof, it quickly disperses the charges to a larger area, acting as a shock-absorber.
Besides, a metal roof is non-combustible; therefore, it is inflammable and can barely cause a fire hazard.
Therefore, the metal roof will not attract lightning nor prevent it from striking; however, it reduces the lightning impact on your property.
So, a metal roof will reduce the danger of lightning, but your property can still be damaged. Consequently, installing a lightning rod on your metal roof is recommended if you live in a lightning-prone area. Fortunately, you can install the non-combustible material with the highest Class A fire-resistance rating metal roofing if you live in a lightning-prone area.
To stay safe, consult your roofing company to receive a professional opinion. If you need to install a lightning rod on your metal roofing in Lubbock, TX , you can get the services from professional roofing companies near you. So, in Canada, thunderstorms are experienced during the hot weather seasons. In addition, lightning flashes occur about once every three seconds during the winter season in Canada.
In Canada, an average of 10 people die due to lightning strikes every year. Also, lightning strikes seriously injure between to people yearly. They serve no function. Many people add them to lightning rods for fancy roof ornamentation. Contrary to belief the glass balls do not usually break when the rod is struck by Lightning. Copper will stain Aluminum and Galvanized steel. In some cases, you can use Tinned lead coated Copper cable on metal surfaces.
If you do need to connect copper to Aluminum, we have a special Bi-Metal connector for that purpose Z. Penetrations should NOT be made on commercial type flat roofs. Yes, long as the installation rules are followed. Certainly Copper is a better conductor than aluminum but the Aluminum cable is larger than the copper cable therefore making up for aluminum's lesser conductivity.
A correctly grounded braided cable of adequate size provides a low resistance path to ground. The key here is to use the specially Braided Cable that is specifically designed for Lightning Protection. Never use cable or wire that is designed for regular electrical power. If lightning were going to strike your home, it would strike whether the rods are there or not. Lightning Rods are installed on; State Farm Insurance headquarters, The White House, Space Shuttle complex, and millions of other commercial buildings and houses around the world, in some countries, Lightning Rods are Mandatory.
Lightning Rods protect against a Direct Lightning Strike. Damage inside the house is sometimes due from Lightning entering through the Electric, TV, and Phone wires. The Rods on the roof have nothing to do with that. The Lightning Rods and Heavy Braided cable is the only way to protect the roof and structure from physical damage.
Compared to regular electrical wire, the EMP around regular wire can couple with other wires under roof and behind walls and can transfer very high voltages into the electrical wiring. Each Lightning Rod should provide a two way path to Ground and one of the cables must maintain a horizontal or downward path down to a ground rod or plate. To prevent galvanic action with roofing and flashings, copper components should be used with copper roofing and aluminum components with steel or aluminum roofing.
Cables interconnect the air terminals on top of the parapet to roof penetration foreground and other metal items, such as the rooftop exhaust fans and their anchorage points. Interconnections are vital to the function of the lightning protection system. Before getting on the job, the roofer, LPS installer, and general contractor should agree on project schedule and roof access, as well as review proposed locations of lightning protection components.
Penetrations, especially, should be located and marked prior to roofing so they can be found afterward. The roofing manufacturer should be consulted for its recommendations.
Adhesives, for example, must be compatible with the roofing, and some manufacturers require an extra layer of membrane under attachment points.
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