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Fri, Dec 21, 12 at 15:17
| I plan on installing a patio using natural (irregular) shaped flagstone with irish moss between the stones as filler. I originally planned on using 5" of compacted stone dust (or 3/4" "A" Gravel) as a base and 2" of concrete sand to lay the flagstones on. I noticed on several other websites and posts that I should not use stone dust (or "A" gravel") as a base as it will not allow drainage. I live in Southern Ontario so the ground freezes and it goes below 0C (32F) in winter. Any thoughts whether it is okay to use stone dust as a base, and if not, what should I be using? |
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| After you excavate, I would put down a layer of shale (2b size), then roll a layer of fabric (like Typar), then use shale dust.I'm in cold Pa. with drainage issues & have had success laying flagstone this way.Hope this helps.Just remember, there is lots of ways to end up with the same thing that works. |
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