How should lighting arresters be installed on metal roofs?
masterinbama Senior Member Location Huntsville Alabama Feb 4, 2011 #2 If you mean how to install the air terminals I use these for standing seam roofs and a standard flat base on flat metal. I glue the flat bases down with an epoxy so I don't have to put screws through the roof. http://www.harger.com/products/idx.cfm?subc3id=183&p=1&oiid=893&thid=796&footid=2&footinfoid=406 If you are asking how many and where get a system designer to do that for you. The liability of these systems is too great to assume yourself.
If you mean how to install the air terminals I use these for standing seam roofs and a standard flat base on flat metal. I glue the flat bases down with an epoxy so I don't have to put screws through the roof. http://www.harger.com/products/idx.cfm?subc3id=183&p=1&oiid=893&thid=796&footid=2&footinfoid=406 If you are asking how many and where get a system designer to do that for you. The liability of these systems is too great to assume yourself.