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avandelay 08-29-2013 02:00 PM

Help with a Fence to Cinder Block Wall
Hello Everyone,

I would like to attach a wood fence (with horizontal slats) to a cinder block wall. The goal is to get a look like this as cheaply as possible...

The existing cinder block fence looks very similar to this...

(sorry best pic I could find on gis)

What I would like to do is attach wood stud (2x4s) to the cinder blocks going vertically and spaced 8 feet apart with tapcons or another concrete fastener (already have my hammer drill ready).

After which I will screw the horizontal slats to the studs using deck screws.

I have several questions:

1) I have a lot of extra 2x4 studs left over from a recent interior reno. Is it OK for me to use these 2x4s for the braces to the cinder block wall? Parts of the wood will be over a concrete patio while other parts will be over soil. If over the soil, should I treat it with anything prior to attaching to the wall, if so, what? Or should I not use these wood studs at all and only use pressure treated wood?

2) I am planning to use the following for the horizontal slats...

Mainly because I've read a lot about wood warping and I think this maybe the best material. Is this assumption correct?

I live in Los Angeles where the weather is 70s year round and not a lot of rain. Should I be overly cautious or go with something else. What would you recommend that's cheap and will not warp?

3) I live in a pretty windy area. Since the slats will be attached to the cinder block wall, wood studs, their weight and the give and take with wind will be a consideration. Are tapcons enough, or do you recommend another type of fastener (sleeve, wedge, etc). Keep in mind I don't want to spend 20 days putting this up :(

Thanks so much for any guidance!

RoyalAcresRod 08-29-2013 03:40 PM

I would use only pressure treated wood, raised up from the ground at least a few inches. All the work you're going to do...don't compromise it by saving a few bucks with the 2X4s you already have

I think Tapcons would be fine. As you're attaching to a block wall, i can't imagine wind would be much of a concern.

Your structure will be close enough to the wall that I don't believe wind will be a factor, if I'm understanding your building plan.

avandelay 08-29-2013 03:52 PM

Do you think I'm OK using siding as the material for the slats? May I get away with using actual wood.

I remember seeing actual wood next to the smart siding (similar dimensions). The boards were about a 1/3 cheaper.

RoyalAcresRod 08-29-2013 07:01 PM

I would be concerned about going 8' with with either "smartsiding" or actual wood, without any intermediate supports.

I think it'll be pretty unsteady.

avandelay 08-29-2013 07:19 PM

Is that because they would sag over time?

RoyalAcresRod 08-29-2013 07:31 PM

That, and "wag" when one pushes in on them. I'd have a vertical support every 4'

avandelay 08-30-2013 09:07 AM

Makes sense. I'll get some stringers and space them out at 4'. Thank you so much for all your help. Gonna start on this tomorrow!

RoyalAcresRod 08-30-2013 09:17 AM

Sounds like a good Labor Day weekend project!

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