DIY Network

Building a Deck

How to Build an Extension to Your Deck

You can enhance your outdoor living space by adding onto an existing deck.

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Materials

  • 2x6 boards
  • 2"x8" joist hangers
  • 3/8" lag screws
  • stakes
  • masonry string
  • concrete
  • gravel
  • 2x8 boards
  • joist supports
  • galvanized nails
  • 4x4 pressure-treated lumber
  • 5/4" decking boards
  • #8 2 1/2" galvanized deck screws
  • 2"x6" rail frames
  • 2"x2" balusters
  • 2x6 pressure-treated lumber

Tools

  • plan
  • drill
  • string line
  • line level
  • post hole digger

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Projects