Step 13: Mount the Upper Blocking.

attaching the upper blocking of a columned room divider
Photo: Ryan Benyi
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Run a line of construction adhesive along the edge of an abutting column panel, and join it to the first to form a corner. Nail the joint together. Clamp a level to the new piece and check both levels to plumb the column assembly. Apply construction adhesive to the block and position it into the L-shaped crook, then drill pilot holes and screw it to the ceiling with deck screws. We were lucky enough to catch a ceiling joist, but you may need to use toggle bolts to fasten the block securely.
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    Tools List

    • 100-foot tape measure
      Tape measure
    • straightedge guide
      Straightedge
    • bar clamp
      Clamps
    • circular saw
      Circular saw
    • caulk gun
      Caulk gun
    • drill
      Drill/driver
    • Countersink bit
      Countersink bit
    • four-foot level
      4-foot level
    • pneumatic brad nailer
      Pneumatic brad nailer and air compressor
    • combination square
      Combination square
    • miter saw
      Miter saw

    Shopping List

    ¾-inch medium-density fiberboard (MDF)
    Get three 4-by-8-foot sheets for an 8½-foot ceiling.

    2x8 lumber to build the base

    Shims

    Solid crown molding to trim the capital and the cabinet top

    Baseboard molding

    ½-inch and ¾-inch quarter-round molding
    for the base cap and shoe molding

    1½-inch MDF screws to assemble the boxes

    2½-inch deck screws to install the base and the blocking

    1¼-inch brad nails

    Construction adhesive

    Wood filler and paintable caulk

    Primer and paint