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Old 07-19-2009, 07:48 PM   #1
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What is this thing on the roofs in my neighborhood


Greetings,

On about half the roofs in my neighborhood, there are these things that no one can figure out what they are. They are made of a PVC/rubber like material. They have a cap that is removable, but do not penetrate the roof, so they are not vents or roof jacks. I was thinking they are a mount or vent of some sort, but can't figure it out. On the homes that have them, they have two in various locations, some are near the ridge, some are in the middle of the roof. I have attached several pictures. Please help!

Thanks!
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What is this thing on the roofs in my neighborhood-img_0746.jpg   What is this thing on the roofs in my neighborhood-img_0749.jpg   What is this thing on the roofs in my neighborhood-img_0756.jpg   What is this thing on the roofs in my neighborhood-img_0753.jpg  

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Old 07-19-2009, 07:52 PM   #2
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What is this thing on the roofs in my neighborhood


Where are you located?
Is this a gated community...wired community

OR possibly it is a roofing attachment - used for a safety harness when roofing
The rubber cap comes off & exposes a circle where a safety line can be attached

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Old 07-19-2009, 08:44 PM   #3
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What is this thing on the roofs in my neighborhood


Although your material description and the photos look otherwise, they look like a more decorative variety of lightening rods to me, because on the one photo, I saw, what seemed to be a cable. The cable is also supposed to be made of copper, as is the lightening rod for highest conductivity.

I am just guessing that IF they are lightening rods, then someone installed some sort of cap cover on the top pointed tip.

The other option, is a permanent Fall Arrest Anchoring location instaled on the roofs to make it easier in the future to clasp onto.

But, I seriously doubt that they would be made of plastic or rubber.

Ed
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Old 07-24-2009, 01:06 PM   #4
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What is this thing on the roofs in my neighborhood


Possibly an FM satellite receiver like on a car. Or a satellite receiver for a security system.
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Old 07-24-2009, 05:05 PM   #5
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What is this thing on the roofs in my neighborhood


I tried to figure that out, too. This thing lists a bunch of roofing terminology and descriptions - but it mentions nothing along those lines...

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Old 07-24-2009, 05:27 PM   #6
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What is this thing on the roofs in my neighborhood


Knock on someones door and ask.

Now, I want to know too.

Ed
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Old 07-24-2009, 05:32 PM   #7
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What is this thing on the roofs in my neighborhood


Ed's given us the best answer yet.
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Old 07-25-2009, 11:44 AM   #8
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What is this thing on the roofs in my neighborhood


At a glance, it looks like wireless Internet access antenna. If the community offers internet access or someone locally is hosting internet access this would work.
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Old 07-25-2009, 12:13 PM   #9
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What is this thing on the roofs in my neighborhood


The plastic part is the removable cover for the fall arrest hold-down. Under the cover, attached by the plastic zip tie, is a through the roof metal hold-down like this: http://www.westernsafety.com/amranchr.html Scroll down.

I've installed about 25 of those things, before I go on the roof. Used to cost $50 each, back in 2000. Be safe, G

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