Lightning Protection - Tape Mesh on the Roof

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Alanvaderi Power-User Join Date: May 2010 Posts: 146 Good Answers: 2	Lightning Protection - Tape Mesh on the Roof 07/07/2024 7:49 AM
	Which is better solution for metal sheet Roof - Insulated Tape or bare Tape for the Lightning Protection Mesh arrangement?
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	Pathfinder Tags: lightning protection

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redfred Guru Join Date: Dec 2008 Location: Long Island NY Posts: 15603 Good Answers: 982	#1 Re: Lightning Protection - Tape Mesh on the Roof 07/07/2024 9:23 AM
	Preventing lightning means discharging static charges in the air before they can accumulate into a powerful bolt of electricity. Insulating a metal roof is the wrong way to go. A grounded lightning rod at the apex of the roof along with grounding the roof will help. Good lightning protection is a specialized trade requiring a site survey and knowing the multiple codes and equipment used. Hire a professional. They are worth the investment. __________________ "Don't disturb my circles." translation of Archimedes last words
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Alanvaderi Power-User Join Date: May 2010 Posts: 146 Good Answers: 2	#2 In reply to #1 Re: Lightning Protection - Tape Mesh on the Roof 07/07/2024 10:08 AM
	Noted. Thanks for the Reply.
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StandardsGuy Guru Join Date: Dec 2006 Location: North America, Earth Posts: 4528 Good Answers: 106	#3 Re: Lightning Protection - Tape Mesh on the Roof 07/08/2024 12:26 AM
	Please describe the mesh arrangement. The type of tape is not likely to matter for lightning which is millions of volts. https://blog.ansi.org/2019/07/nfpa-780-2020-standard-lightning-protection/ __________________ “I would rather have questions that can't be answered than answers that can't be questioned.” - Richard Feynman
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#4 Re: Lightning Protection - Tape Mesh on the Roof 07/08/2024 7:30 AM
	There is no need to "reinvent the wheel". Just follow the standard applicable to the country of installation. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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vsar Guru Join Date: May 2010 Location: Metro.Manila, Philippines. Posts: 1271 Good Answers: 27	#5 Re: Lightning Protection - Tape Mesh on the Roof 07/16/2024 8:26 AM
	Regardless of your chosen grounding method, insulated or not, the roofing materials being made of metal, it would be better for you to ensure that all joints especially the pointed areas continuity-wise are all electrically and mechanically sound connected... The whole roof being electrically connected can integratedly be grounded all together as one unit using the chosen lightning protection.. __________________ vsar
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raghun Power-User Join Date: Jan 2010 Location: Hyderabad Posts: 343 Good Answers: 22	#6 Re: Lightning Protection - Tape Mesh on the Roof 07/17/2024 6:11 AM
	Metal sheet can be part of lightning protection scheme, provided it meets certain requirements stipulated in the codes with regards to thickness and continuity of joints (if any). If not, use of insulated tape is appropriate. __________________ Raghunath
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7anoter4 Guru Join Date: Oct 2012 Location: 100 miles North from the World Center Posts: 879 Good Answers: 42	#7 Re: Lightning Protection - Tape Mesh on the Roof 07/31/2024 5:21 AM
	They are a lot of Lightning Protection Standards, for instance: NFPA 780/2023 Standard for the Installation of Lightning Protection Systems IEEE Std 998™ IEEE Guide for Direct Lightning Stroke Shielding of Substations BS 6651 Code of practice for protection of structures against lightning BS EN 62305 1-4 THE LIGHTNING PROTECTION INTERNATIONAL STANDARD and many other. In my opinion, the roof metallic material has to be corrosion resistant. Aluminium and galvanized steel is good. If you need a corrosion protection for a specific high pollutant environmental atmosphere like smoke from a stack the roof has to be protected by a layer of lead or tin. A suitable paint may be used if it is required, but it has to be non-flammable material. The metallic roof strips have to be bonded to lightning protection system-each strip individually-even covered with insulating paint-if the stroke distance it is less than permissible-it has to be calculated. If you intend to use this as a part of lightning protection system the minimum thickness is 3/16”[4.8 mm]. __________________ Julius
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7anoter4 (1); Alanvaderi (1); PWSlack (1); raghun (1); redfred (1); StandardsGuy (1); vsar (1)

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