Step 7: Siding beside windows

Siding beside windows
Photo: David Carmack
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Hold the swing stick near the window casing.

Align one mark with the top of the head casing. Swing the stick's bottom to one side.

When a mark on the lower part of the stick lines up with the butt edge of the last installed clapboard, transfer the marks on the stick to the wall.

Transfer the marks on the wall to the story pole as in Step 4. Then transfer those marks to the side casing and nearest corner board. Repeat the swing-stick/story-pole process on the opposite corner board, then continue hanging siding.

Stick an 8-inch-wide piece of waterproofing membrane above the head casing. Extend it 2 inches past the casing on each side of the window.

Bend a 3-inch-wide piece of flashing over the membrane and the window casing so it overhangs by ¼ inch.

Fasten the flashing's top edge with 4d nails.

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    Tools List

    • speed square
      Speed Square,
      for marking story pole and swing stick
    • chalk line
      Chalk line.
      for premarking courses and for finding and marking plumb lines at stud locations
    • utility knife
      Utility knife,
      for notching clapboard and cutting felt, flashing, and waterproofing membrane
    • tacker hammer
      Hammer tacker and staples,
      for attaching builder's felt to sheathing alternative: staple gun
    • 16-foot tape measure
      Tape measure
    • caulk gun
      Caulk gun with paintable, synthetic-rubber sealant,
      for sealing ends of clapboard at casings, frieze, and corner boards
    • ladder
      Ladder or scaffolding,
      for reaching high spots
    • miter saw
      Miter saw,
      for cutting clapboards to length
    • hammer
      Hammer
    • table saw
      Table saw,
      for ripping down the starter strip

    Shopping List

    1. PRIMED RED-CEDAR CLAPBOARD

    2. BUILDER'S FELT: 15-POUND, 12-INCH-WIDE ROLL

    for protecting sheathing at water table, corner boards, and around window and door casings



    3. BUILDER'S FELT: 2-INCH-WIDE ROLL

    for covering the wall at stud locations



    4. METAL FLASHING

    for covering the top edge of the water table and window casings



    5. WATERPROOF MEMBRANE

    for protecting the tops of windows and doors



    6. 4D AND 7D STAINLESS STEEL RING-SHANK NAILS

    for attaching clapboard and flashing