Step 8: Backfill the Gaps

Use a spade
Photo: Kolin Smith
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Using a spade, backfill the gaps on either side of the stones with extra stone dust and a layer of dirt. Step on the dirt to pack it in place, being careful not to dislodge the stones.

TOH Tip: When setting a stone, butt it against the adjacent stone, then drop it straight down so that you avoid dragging the stone dust and pushing it into the joint.
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    Cast Concrete Block:
    Choose a block made specifically for freestanding walls, not retaining walls or pavers. To calculate how many blocks you need, multiply the length of the wall, in inches, by the height, and divide that figure by the area (length x height) of the side of one block. Add 10 percent to account for cuts and breakage.

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