Step 11: Add Concrete to Stabilize the Blocks

adding concrete to the side of edging blocks for reinforcement
Photo: Kolin Smith
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Using a mason's trowel, fill the trench behind the blocks with concrete, mixed to a stiff consistency, until it's level with or slightly higher than the asphalt's surface. With a pulling motion, smooth the concrete against the back of the blocks at an angle until the top of the concrete sits about 2 inches below the top of the blocks.
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    Tools List

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    • chalk line
      Chalk line
    • dust mask
      Dust mask
    • ear muffs
      Hearing protection
    • hammer
      Hammer
    • concrete saw
      Concrete saw (Rents for about $50 a day from The Home Depot)
    • trenching spade
      Square-tip spade
    • brick set
      Brick set
    • maul
      Maul
    • mason's trowel
      Mason's trowel
    • mallet
      Rubber mallet
    • push broom
      Push broom

    Shopping List

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    1. Nails Make sure they're at least 3 inches long

    2. Standard Concrete Mix such as Quikrete

    3. Belgian block stone Available at stone yards in a variety of sizes and shapes 4. Mason's Line to align the blocks It won't stretch or sag like regular string

    5. Stakes

    6. Paver Base Also known as stone dust

    7. Flowers and plants for landscaping