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    1. General-Piece8490 on

      Glass never rusts and it’s cheap so many places where you have to use walls to separate homes use glass to avoid anyone from climbing over. It’s a 3rd world country thing. Used in the americas too, except the US and Canada.

    2. A lot easier to remove these with the swift swing of a metal object Razor wire would have been more challenging.

    3. KickSidebottom on

      When I was a kid, we went to Mexico and were walking around a small village. Their walls were probably 6 feet high around the buildings. They would cement glass bottles on top when they built them and after it hardened would go by with a stick or bat and break the bottles to make it all slicey on top. We also went into even poorer areas where the huts “don’t have doors, they have dogs!”

      It was a neat trip and eye-opener even as a little kid how others live (and they were really nice even though we clearly weren’t from around those parts).

    4. Interesting. Our local ordinance prohibits barbed wire and razor wire, specifically, from residential fences. Loophole?

      It could be to keep birds away too.

    5. Worcestercestershire on

      In Mexico they call this Mexican Barbed Wire.

      You put a layer of cement on top of the wall and insert glass bottles. When it hardens you take a piece of rebar and break the tops off the bottles.

      Someone climbed the back wall of my friend’s Mom’s house in Nogales. She had a pitbull. The guy got hung up on the wall trying to get away from the dog. They found his body the next morning.

    6. This is to be common in Dublin, Ireland. Not anymore though. Maybe it’s illegal now. I dunno.

    7. Typical new Orleans french quarter security system. You should be able to use Google maps streetview to see them. Very common here. 

    8. GonePhishn401 on

      if I were a burglar, this would probably be a better deterrent than actual barbed wire.

    9. We have those in Chile too, but it is not for wild animals, just the cheap solution to actual spikes.

    10. Seems kinda stupid because anything can really break it, like something blowing in the wind, and then there’s just glass on the ground of either side of the fence.

    11. Bob_the_brewer on

      My roommate in college was from South Africa and said they had the same thing

    12. When I was in Iraq, we used to toss a Kevlar blast blanket over the wall when we needed to go over walls for raids.

    13. karlywarly73 on

      Everywhere in Ireland when I was a kid. And yes, I did cut my hands. Ivy would grow on the walls and you’d never see it.

    14. TheSquirrelWithin on

      The Berlin Wall that separated East and West Germany had such deterrents on top. But eventually in at least some places they removed the deterrents and left bare, smooth, rounded concrete on top of the walls. Desperate people trying to get over the wall could grab on to things embedded on top, but smooth concrete gave them nothing to grab hold of.

    15. Couldn’t a highly motivated thief get some heavy padding to cover it up and jump over? Or knock most off it with a hammer?

    16. In my country of origin in Asia, it is very common. In my current country of Canada, it is illegal.

    17. inthewoods54 on

      “instead of barbwire”…

      Why would there even be barbwire around your condo?

    18. We saw it in Mexico & Guatemala. I always called it “poor man’s razor wire.”

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