Step 17: Spread the Grout on a Diagonal

spreading grout onto a cobblestone driveway apron with a squeegee
Photo: Kolin Smith
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Using a double-foam squeegee, spread the grout on a diagonal over the cobbles to fill the joints evenly and remove any excess. Then, just before the grout hardens, reach in from the edges with a push broom to clear away any crumbs of grout. Allow at least five hours for the grout to cure before walking on it and 24 to 72 hours before driving on it.
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    Tools List

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    • 30-foot tape measure
      tape measure
    • finish nails, various lengths
      nails to stake the chalk line in asphalt
    • chalk line
      chalk line
    • safety glasses
      safety glasses
    • ear muffs
      hearing protection
    • concrete saw
      14-inch gas-powered concrete saw with segmented diamond blade
    • garden hose
      garden hose
    • hammer drill
      hammer drill with chisel bit to break up the driveway surface
    • cutter mattock
      pick mattock to remove broken-up chunks
    • gloves
      work gloves for handling asphalt and cobbles
    • garden stakes
      stakes
    • mason's line
      mason's line
    • iron rake
      bow rake
    • plate compactor
      plate compactor to tamp base and pavers
    • side-cutting pliers
      side-cutting pliers
    • chalk
      chalk stick
    • mason's chisel with hand guard
      mason's chisel with hand guard
    • sledge hammer
      hand sledge
    • brick hammer
      brick hammer
    • tamper
      hand tamper to fix uneven spots during installation
    • duct tape
      duct tape
    • concrete mixer
      cement mixer
    • Squeegee
      double-foam squeegee to spread grout into joints
    • push broom
      push broom to remove excess grout

    Shopping List

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    Cobblestone mats with cast-in grid
    Have your supplier help determine the amount you need.

    Permeable epoxy grout

    Leveling sand.
    A ½-cubic-foot bag covers 6 square feet at 1 inch deep.