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Old 03-24-2011, 04:37 PM
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shamrock Crushed limestone vs crushed concrete

I live in Michigan and am presently getting bids for a paver patio. One contractor told me he uses 21-AA crushed limestone as a foundation material and that if the other contractors aren't using it, to "walk away from them". Is crushed limestone that much better than crushed concrete for this application? Should I not hire a contractor who does not use crushed limestone? If it matters, the patio will be raised about 2 feet off the ground. Any help is appreciated.
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Old 03-24-2011, 04:49 PM
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See the recent thread "base material" here on the forum under hardscaping. Very similar discussion.
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Old 03-24-2011, 06:54 PM
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Sounds to me like this guy was trying to scare you into going with him. I don't use 21-AA and I don't think many of us on this site do, so you would have to "walk away" from us. After researching, 21-AA has particle sizes greater than what we all typically use (up to 1.5"). What we use is only up to .75-1". I would have to think that what we typically use would be better than 21-AA.
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Old 03-24-2011, 10:03 PM
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We use 21-A which has a maximum size of 3/4". It is sometimes referred to as 'crusher run'.
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Old 03-25-2011, 06:53 AM
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He said AA
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Old 03-25-2011, 07:26 AM
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If you are trying to establish who is the expert, you could go to the ICPI website and print off their specifications which are sometimes referred to as the industry standard.
Of course, if you put that in the client's hands, you'll need to be prepared to follow it.
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Old 03-25-2011, 07:36 AM
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Fine Edge is just really nice Fine Edge is just really nice Fine Edge is just really nice Fine Edge is just really nice Fine Edge is just really nice
Crusher Run / ABC is what we would use to build up our base in most situations. It's funny how many different terminologies there are for the same type of stone. Being from the South, sometimes I have no idea what type of material you Yankees are "tawkin bout, youz know?"
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Old 03-25-2011, 07:54 AM
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Quote:
Originally Posted by mzj1jp View Post
I live in Michigan and am presently getting bids for a paver patio. One contractor told me he uses 21-AA crushed limestone as a foundation material and that if the other contractors aren't using it, to "walk away from them". Is crushed limestone that much better than crushed concrete for this application? Should I not hire a contractor who does not use crushed limestone? If it matters, the patio will be raised about 2 feet off the ground. Any help is appreciated.
I'd be a little skeptical of any contractor who is trying to strong-arm you into "walking away" from other contractors based on their alternate techniques. Maybe he's right, but if this guy is really confident that his way his better, then he should educate you as to why his way is better and let you make the decision.

A good salesman will sell on the positive benefits of his services, without being blatantly negative about his competitors.
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Old 03-25-2011, 10:54 AM
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Thanks to all. Your comments have been most helpful.
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Old 04-08-2011, 02:42 PM
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Crushed limestone #11

I just purchased one ton of #11 crushed limestone from the quarry. Will this work well for a paver base. It is made up of smaller pieces with no dust, very jagged. They said it would compact and hold very well?
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Old 04-08-2011, 05:54 PM
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I wouldn't install it without fines.
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