For those interested in lightning protection and are getting estimates. I put together a ten point list on what to ask the installer when getting an estimate. I know some of this for some here is repetitive but I'm posting the list because I've got a lot of interest on my NextDoor group for this information recently.
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If you use a LPI certified or non-certified installer, you want to ask the following questions when you contract with them:
1) Do they follow the NFPA 780 Standard for installing lightning protection systems?
2) Do they use UL certified components, meaning wire, air terminals, ground rods and connectors?
3) Do they use all copper components? Aluminum is a cheaper option and is appropriate in certain circumstances but copper can be re-used when you eventually replace your roof.
4) How many ground rods will be installed and what length? They should install three to four ground rods depending on the size of your home. 10ft rods may be fine depending on your soil but 20ft will be better for most soil variations here in the Villages. The concern is although the Villages tries to build your home on good solid ground with a good soil mixture, some areas may have soil that is sandier than others and require longer ground rods to get to the less than 25-ohm specification.
5) Do they test all ground rods to verify they have less than 25 ohms resistance to earth ground. The installer should provide you with a report for each rod tested?
6) If they use 10ft ground rods make sure you see a report that all rods are less than 25 ohms to earth ground. If any are out of spec, you can ask and pay for an additional 10ft to get the rod in specification, less than 25 ohms.
7) Will air terminals will have at least 2 paths to ground?
8) Do they bond everything metal on the roof such as attic and dryer vents, and your HVAC, pool and spa equipment? Bonding means connecting to your earth grounding system.
9) What type of roofing connectors do they use? Is there any guarantee if there is a leak and for how long? Do they use any sealants used to prevent leaks?
10) What is their recommended maintenance interval is and how much it will cost? You should have your system checked every 3-5 years.
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Last edited by jrref; 09-07-2025 at 02:52 PM.
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