Privacy Fence on Wall Cap

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  #1  
Old 09-26-20, 03:48 PM
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Privacy Fence on Wall Cap

Currently, I have a cinder block wall. There is a section that is about: 25 feet long x 2 feet high

I would like to build a REDWOOD lattice fence (adding another 2 feet in height) with posts on top of the wall cap (preferably). The fence looks like this:
https://concordstoneworks.com/wordpr.../Lattice-Fence

This is a top mount:
https://www.youtube.com/watch?v=r3AUO0tYoPc

This is a side mount:
https://www.youtube.com/watch?v=0IKp61Fj07Y

Because I live in California, the Santa Ana winds can be extremely strong each October-November.

Will tapcons be sufficient enough for a side mount or should I use anchors and what type?

If I want to do a top mount, how would I secure the post (4x4 at 3 feet tall) to the wall cap? Will this be strong enough because can the wall cap come lose?

Really would like the end result to look similar like these:

https://s-media-cache-ak0.pinimg.com...1f059e278e.jpg
http://www.outdoorvinylfence.com/adm...iceonbrick.png
https://www.bostonfenceandvinyl.com/...op-fencing.jpg

Thanks
 
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Old 09-26-20, 03:52 PM
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The other option beside real redwood, I can use vinyl redwood and don't have to be concern about weather proofing it with Thompson water sealer.
 
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Old 09-26-20, 05:11 PM
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While proper bolts/anchors might secure to the concrete well, there won't be anything holding the top cap on except for the cement. Cement is great for compression loads, but it stinks with torsion.

I think you'd need to do something with the 4x4 posts being bolted down the sides of the wall. With either through-bolts or possibly anchors. I don't know that tapcons are the way to go as I don't think they have the strength you'll need.

I'm sure others will be around with better solutions.
 
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Old 09-26-20, 05:28 PM
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I agree with you Zorfdt. I will wait for more relies.

Btw, is this cedar or redwood? I like the color.
https://concordstoneworks.com/wordpr.../Lattice-Fence
 
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Old 09-27-20, 08:30 PM
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No replies ZorfDT. Should I post this on the fastener forum?

I wonder if I can use 1/2 diameter lag screws (6 inches) into lag shield? Is lag screw and lag bolt the same? Or better yet, a Drop-In Anchor is stronger.
 
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Old 09-27-20, 10:04 PM
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Is the wall solid or hollow?
 
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Old 09-28-20, 02:22 AM
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It is solid.

I have been watching lots of YouTube videos for the last two hours.

I think I will be using two lag bolts (6 inches long by 1/2 diameter) with lag shields for each post. The post will be 6 feet tall but lag bolts will be fastened at the 2 feet and below point.

Will 2 inch deep lag shields be enough? How much does it needs to bite into the concrete just to hold up posts for fencing?
 
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Old 09-28-20, 06:30 AM
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I guess I'm trying to catch up, what style of construction are you going with, the fence mounted directly to the top, or some type of support going vertically up the face of the wall?

Will 2 inch deep lag shields
Please define lag shields, I have never heard that term!

 
  #9  
Old 09-28-20, 07:46 AM
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Hi,

I would like to do a top mount to the wall cap but zorfdt pointed out it may not be as strong. Therefore, most likely, the posts will be side mounted to the solid wall.

I thought these are called Lag Shield:
https://www.homedepot.com/p/3-8-in-x...3602/204273401

Thanks 👍
 
  #10  
Old 09-28-20, 09:35 AM
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That's a tough one, obviously it's done but the question is how. When the walls are built do they install some type of threaded anchor bolts that the fence is attached to?

When I built my shed on an existing slab I put down a dozen Simpsons expansion bolts into the slab and don't see that thing going anywhere!

Your lag shield is just a threaded insert that expands, same as the expansion bolts!
 
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Old 09-28-20, 09:51 AM
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Thank you for sharing Marq!

I am going to research more into this.
 
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