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Install Deck Joists

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0:43
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This deck is MASSIVE!

What happens here

After the perimeter frame is in place, workers proceed to install the internal joists. These joists are placed perpendicular to the longer sides of the frame, typically at regular intervals (e.g., 16 inches on center), providing support for the deck surface. They are carefully measured, cut, and fastened to the perimeter frame, often using joist hangers for secure attachment. This step ensures the deck surface will be sturdy and level.

Goal: Add internal support joists to the deck frame.

Tools and materials

  • Circular Saw DeWalt — Cutting lumber to the required lengths
  • Cordless Drill/Driver DeWalt — Driving screws and fasteners to secure the joists
  • Level — Ensuring joists are installed level
  • Measuring Tape Unspecified — Measuring joist lengths and spacing
  • Pencil/Marker Unspecified — Marking cut lines and spacing
  • Exterior Screws/Fasteners Unspecified — Securing the joists to the perimeter frame
  • Joist Hangers Unspecified — Providing stronger connections between joists and the perimeter frame
  • Pressure-Treated Lumber — Creating the internal joists for the deck