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Old 06-07-2008, 02:14 PM   #1
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Fake rock for retaining wall


I want to build a retaining wall in my backyard but don't want to pay for real rock or the bricks. I have seen some places that have fake rock that looks like some sort of hard plastic or composite. It looks real but if you knock on it it almost sounds hollow. Does anyone know how much this costs and where to buy it? I haven't seen it for sale anywhere.

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Old 06-07-2008, 02:51 PM   #2
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Fake rock for retaining wall


How much soil do you want to retain?

Plastic sounds like a poor solution if you want it to be permanent.

Dick

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Old 06-07-2008, 03:37 PM   #3
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Fake rock for retaining wall


The wall will be about a 1 to 1.5 feet tall. So it'll be holding back a fair amount of dirt. My plan was cut fence posts in half and dig them in and attach plywood to the fence posts. Then I wanted to attach the fake rock directly to the plywood. So the wood would actually be doing the support. I would probably use some sort of real rock for the capstones.
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Old 06-07-2008, 04:02 PM   #4
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Fake rock for retaining wall


Fake rock costs more than real rock, so your idea is based upon a faulty premise. And the "design" of a plywood retaining wall covered with fake rock would be doomed to certain and rapid failure.
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Old 06-07-2008, 04:18 PM   #5
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Fake rock for retaining wall


How much does manufactured stone usually run? Mine needs to be about 25-30 feet long and a little over a foot tall. If I use those generic looking bricks that Home Depot sells it will cost me over $500. I live in Colorado so I could go buy real stone for cheaper than that, but real stone will leave a lot of gaps. I just like the clean look that fake manufactured stone has.
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Old 06-07-2008, 06:23 PM   #6
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Fake rock for retaining wall


5-7 bucks a SqFt., and you will need to buy CMU to adhere them to, not some contraption of plywood.
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Old 06-07-2008, 11:03 PM   #7
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Fake rock for retaining wall


Where can you buy it at?
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Old 06-07-2008, 11:53 PM   #8
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Fake rock for retaining wall


What part of Colorado are you in?
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Old 06-08-2008, 07:17 AM   #9
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Fake rock for retaining wall


NE Denver metro.
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Old 06-08-2008, 10:30 AM   #10
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Fake rock for retaining wall


Visit Robinson Brick. They have fake stone/real stone and excellent brick and have a nice showroom.
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Old 06-08-2008, 12:19 PM   #11
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Fake rock for retaining wall


Thanks for the info. I looked at there website and that is exactly the type of stuff that I like (the Robinson Rock). I'll have to head down there one of these days to price it out.

I am also finishing my basement and the "thinrock" brochure they have is giving me some awesome ideas.
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Old 06-08-2008, 10:16 PM   #12
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Fake rock for retaining wall


I think it may work for foot high wall.
Just take care of digging 8-10 inches deeper and feet wider, put gravel bed underneaths and around bottom part, don't put wall vertically-lean it towards higher level and backfill it well with gravel. Plywood has to be moisture protected as well from other then concrete stones side.
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Old 06-09-2008, 12:17 PM   #13
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Fake rock for retaining wall


Plywood isn't something that should be incorporated into a retaining wall, or even a decorative non-structural wall. Wood, for that matter, isn't really a great long-term option at all.

I think you're on the right track with CMU blocks and an applied rock face. Be sure that you place an appropriate footing with compacted AB3/road base or concrete, or your wall won't last long at all.
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Old 06-09-2008, 12:49 PM   #14
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Fake rock for retaining wall


Just found that my neighbors did something similar - but they used thin- veneer rock over the block wall. looks real!

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