Step 9: Secure prefab columns and complete installation

Stand the columns under the arch and slip them over the walls «»
Stand the columns under the arch and slip them over the walls. Pull down on the arch so that it sits tight against the top of the columns. Before nailing the parts in place, be certain that the columns are perfectly plumb and parallel. Also, check to make sure that the ends of the archway are centered on top of the columns. Secure all of the parts with 2 ½-inch finishing nails; bore pilot holes first to prevent splitting.
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    Tools List

    • 16-foot tape measure
      Tape measure
    • hammer
      Hammer
    • utility knife
      Utility knife, for scoring around casings
    • flat prybar
      Pry bar, used to remove casings
    • drill
      Drill/driver, for driving drywall screws
    • hand saw
      Handsaw, for cutting 1x4 blocking
    • drywall saw
      Drywall saw, for cutting drywall
    • drywall knife
      Drywall knife, for applying joint compound

    Shopping List

    1. ARCHWAY KIT

    2. ½-INCH FINISHING NAILS

    3. ½-INCH DRYWALL SCREWS

    4. DRYWALL

    5. 120-GRIT SANDPAPER

    6. PRIME AND PAINT

    7. DROP CLOTH