0 Helpful?

Lightning rods for metal roofs?

We recently installed a galvalume roof for a client. They asked how the roof was grounded. It's not, as far as I know, other than through the structure. Do others here ground their metal roofs or is it a gimmick?

Asked by michael maines
Posted Jun 30, 2011 9:35 AM ET

Tags:

6 Answers

Select your preferred way to display the comments and click "Save settings" to activate your changes.
1.

I have never grounded a metal roof or installed a lightening rod and in over thirty years of building have never had a lightening problem as a result of this practice. I'd call it a gimmick.

Answered by Michael Chandler, GBA Advisor
Posted Jul 2, 2011 12:31 AM ET
Edited Jul 2, 2011 12:31 AM ET.

2.

i'm not sure about roofs, but pretty much all metal out buildings here are grounded
it would seem if your roof is in a possibly risky area, like a large open field where frequent lightening strikes occur, grounding couldn't hurt any. from what i know, it may not do much in an actual strike but could help dissipate static. it should be that costly or difficult.

lightening rods tend to venture more into the gimmicky world unless you are on a big structure and have a LOT of $$ to protect

Answered by bob coleman
Posted Jul 2, 2011 1:31 AM ET

3.

Thanks for the response, guys. Pretty much as I suspected.

Answered by michael maines
Posted Nov 2, 2011 1:58 PM ET

4.

I have installed lightening protection on a few homes when requested, this is company I used.

http://www.bondedlp.com/

Answered by Allan Edwards
Posted Nov 2, 2011 9:34 PM ET

5.

lightening |ˈlītn-iNG, ˈlītniNG| noun
a drop in the level of the uterus during the last weeks of pregnancy as the head of the fetus engages in the pelvis.

Guys, I think the word you're looking for is 'lightning'. No 'e'.

Answered by James Morgan
Posted Nov 2, 2011 10:22 PM ET

6.

Thanks for the correction James.
More levity, even at the cost of brevity.

Answered by Michael Chandler, GBA Advisor
Posted Nov 2, 2011 10:30 PM ET

Other Questions in General questions

Dryer vent in air-tight Passive House

In PassivHaus | Asked by Gerald Blycker | Nov 21, 14

Fresh air distribution for hydronically-heated house??

In Mechanicals | Asked by John Charlesworth | Mar 26, 15

Manual J - Calcs - Mini Splits

In Mechanicals | Asked by Peter L | Mar 26, 15

Attic insulation reality check

In Energy efficiency and durability | Asked by Nathaniel G | Mar 26, 15

Insulating truss joists 16" on center — Best way?

In Energy efficiency and durability | Asked by Walter Gayeski | Mar 25, 15
Register for a free account and join the conversation


Get a free account and join the conversation!
Become a GBA PRO!