After looking for ways to help improve privacy between me and my nextdoor neighbors I thought about buying 8ft long panels of corrugated steel and fastening them to our six foot cinder block wall. I plan on just setting them at the ground level and having the corrugated lines run up and down vertically. I'm going for a very modern austere look so this would not only function well for privacy needs but also work with my design style.

It's against city code for me to build anything on top of the fence but there's nothing that states I can't attach anything to the fence on my side. I wanted to know what is the best type of anchor screw for this type of application and if anyone has done this before and how successful they were.

I live in the desert with an average rainfall of only four inches yearly so I don't think I'd have to worry about water and moisture causing damage to the cinder block with a piece of metal in permanent contact with it over the long haul.

Lastly, would an anchor bolt with nut and washer added at the top provide me with more support?:

What I'm thinking of doing is drilling a hole in the corrugated panels so that the hole allows me to thread this anchor through it. The hole would be in alignment with the very top of the cinder block wall. I'd have the hook end on the opposite side grabbing onto the wall and on my side I'd tighten the bolt. I would want to add something like this for added strength since we get some high winds in the area from time to time. I think an extra two feet isn't much to worry about but I'm by no means an expert. Hence why I'm here asking for input.

Any suggestions for anchoring these panels to help me create my project would be appreciated.

  • 2
    You may want to double check the city code. In a lot of places the maximum height for a fence/wall is 6ft - fixing panels to the fence which are 8ft high would probably be viewed as raising the height above the legal limit. Of course this would only be an issue if the neighbours actually complained about it.
    – EdHunter
    Oct 19, 2020 at 14:01
  • Those are designed to anchor a wall into poured concrete or filled cinder blocks. The rounded bend won't grab well to the squared edge of a cinder block. Also, if the hook of that anchor is on the neighbor's side of the wall, a few blows with a hammer would allow him to knock them loose.
    – FreeMan
    Oct 19, 2020 at 14:06
  • 2
    @Adrien - Play nice Adrien, (or we will not want to help you) I understood what you wrote, YOU misunderstood what i wrote. I was not suggesting they would "pop off" I meant that if they are not supported that they would be loose and that possibly the wind could move them around resulting in them possibly banging into each other. The sound will be very loud, Perhaps loud enough to be heard for miles. My point is, it may not be a good idea to have the tops unsupported.
    – Alaska Man
    Oct 19, 2020 at 18:06
  • 1
    those anchor bolts are for installing in concrete when it is a fresh liquid slurry. they cannot be used in concrete that is already hard.
    – Jasen
    Oct 20, 2020 at 8:40
  • 1
    Off topic, but I doubt that the loophole in the city code mentioned above applies here. You're effectively raising a fence above legal height. Period. Also, this is what window blinds are for.
    – isherwood
    Nov 18, 2020 at 13:57

1 Answer 1


I would not bother with that anchor bolt idea. I'd go with a lot of small anchors rather than a few big ones. Concrete screws, Tapcon brand are popular, should work. I'd attach the metal top, middle and bottom spaced maybe 2' horizontally.

tapcon screw

You'll need a masonry bit and a nutdriver bit the right size for the concrete screws, and a metal bit slightly larger. I'd drill the metal first, then use the metal to locate the holes in the concrete, working bottom to top then side to side.

If you have a fairly flat concrete surface at the bottom of the wall, you could skip the bottom row of screws and hold it to the wall with either angle iron or a 2x2" strip of wood. That would hold the bottom edge to the wall securely and might be quite a bit easier.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.