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what should the ratio of crushed rock and sand for a paver

what should the ratio of crushed rock and sand for a paver

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In effort to find a good answer I've been all over the internet looking for an answer to exactly how thick of a layer of crushed rock and how thick of a layer of sand to use for a patio. Or at the very least what the ratio should be.

The difference in answers is enough for me to not be able to make a good choice. Not wanting to have it too thin is my main goal. Seeing as I've already moved 1600 (5 to 8 lb ea), 4"x4"x8") bricks by hand to where the patio is going to be, I'm not really all that worried about moving a ton or so of crushed rock. What's a little more of a workout right? I'm also not trying to skimp. If I need 4 inches of crushed rock, then I'm doing it.

I just completed a 90 square foot patio. I ended up putting down 4 inches of paver base (crushed concrete), 1 inch of sand, and then the 2 inch patio stones... so I dug down 7 inches all around. To be honest though, I went deeper than that in some places and ended up having to bring in much more paver base (crushed concrete) than I really needed. So maybe I have 6 inches of paver base in some areas. In my opinion, the key was the compacting. I highly recommend you rent a plate compactor. You should be able to rent one for less than $100 for 4 hours and it is completely worth it. You will only use it for 30 minutes but it will make the crushed concrete as solid as rock.

Also one of my neighbors who is a landscaper joked about how far I had dug down... he said I went way too deep and now I can land a helicopter on my new patio. I tend to agree with him that the 4+ inches of paver base was more than needed but still I am happy with how it all turned out.

It really depends on what part of the country you are building in. The method is much different in the frozen north than the sunny south. I do not like crushed stone with a gravel overcoat. the sand will eventually settle into the stone and leave voids under the pavers.. I am a firm believer in stone dust. 3/8 stone dust, wetted and compacted is like a concrete base. In the north country, we may dig out a foot of subsoil, 6 inches of packing gravel and 6 inches of stone dust. compact well. In no freeze areas, 4 inches over a stable subsoil is fine. Compacting the base is an extra step, but will pay off in a long lasting even deck.

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