How to build steps for outdoor wood stairs

Written by steve smith
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How to build steps for outdoor wood stairs
Outdoor steps provide access to elevated structures. (steps 6 image by Samuel Birkan from

Outdoor wood stairs require extensive planning and design. Once complete, the building of the steps and installation of stringers is a simple process. Outdoor stairs are used for access to campers, decks or elevated patios. They add functionality and last a long time. Carpentry skills and patience are required to complete this project with success.

Skill level:
Moderately Challenging

Things you need

  • Stair stringers
  • Stringer brackets
  • Tread board
  • Table saw
  • Wood screws, 4-inch galvanised

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  1. 1

    Install the stair stringer brackets to the front of the outer deck joist or support beam with 4-inch wood screws and a power driver. This should be at the entry point to your elevated structure. Install two brackets, one on each side of the entrance.

  2. 2

    Insert the stair stringers into the brackets and level the top and sides with a carpenter level. Attach the stringers to the brackets with 3-inch wood screws and a power drill.

  3. 3

    Cut the tread board 2 inches wider than the width of the stair stringers using a table saw.

  4. 4

    Install the tread boards on the stair stringer. Attach the tread boards to the stringer with wood screws and a power drill. Check the tread boards and stringers to ensure they are level with a carpenter's level. Continue to install tread boards to the stringers to complete your steps.

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