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Construct an elegant addition to your home's exterior
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Once carpenters were judged by how skilled they were by the projects they had worked on, the tools in their tool boxes and by their ability to build steps. Despite the skill level, building porch steps is still within the capabilities of the average do-it-yourselfer.

Things You Should Know

  • Measure and calculate the length and height your steps need to travel. Plan each step to be 10.5 inches (26.7 cm) deep and 8 in (20.3 cm) high.
  • Cut your steps, backing, and stringers (sides) according to your measurements using a circular saw. Attach the stringers to the porch with hangers and screws.
  • Screw the backings to the stringers, then screw on the steps themselves. Fasten treads or grips to the steps using deck screws.
Part 1
Part 1 of 2:

The Basics

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  1. [1]
    • The rise is the height of porch, or the steps, that you will need.
    • A run is the total length of the steps from the edge of the porch to where the steps end.
    • Stringers are usually 2 x 12-inch (5.1 x 30.5 cm) treated wood boards to which the tread and riser are attached. You can buy pre-cut stringers at most lumber or home improvement stores.
    • The treads are 2 x 6-inch (5.1 x 15.2 cm) treated wood boards that lay parallel to each other to form a single step that is approximately 10.5 inches (26.7 cm) wide.
    • You will attach a riser, a 1 x 8-inch (2.5 X 20.3 cm) board, resembling a toe board, to the back or upright section of the step. Most steps are 6 to 8 inches (15.2 to 20.3 cm) in height.
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Part 2
Part 2 of 2:

Building the Porch Steps

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  1. Also, check local codes for specifications regarding handrail requirements and permitting. [2]
    • Take the total height and divide it by the height of the riser. This tells you the number of steps you will need.
    • Remember that the riser height averages between 6 and 8 inches (15.2 to 20.3 cm) high. As an example, a height of 35 inches (88.9 cm) divided by a 7-inch (17.8 cm) riser will result in 5 equal steps.
    • Don't forget to consider the blocking or apron at the bottom of the stairs to support the stairs.
  2. That will give you the run (or length) of steps from the face of the porch to the end of the steps. In this case, the run is 52.5 inches (1.33 m).
  3. [3]
    • Have the square set up by clamping a straight edge at the 7-inch (17.8 cm) mark on the short outside section of the square.
    • The long outside section of the square, at that point, will be at the 10.5-inch (26.7 cm) mark.
  4. Double check all of your measurements carefully and make sure they are clearly visible, and then use the saw. Note that you will not cut all the way through with the circular saw. Finish the cut with a hand saw or jigsaw.
  5. Now, mark out the other stringers you need. [4] The spacing of the stringers should not be more than 16-inches (40.6 cm) apart for strength. You would need 4 stringers on a 4-foot-wide (1.2 m) stair.
  6. [5]
    • Check to make sure that they are plumb and level to each other as you go.
    • The bottoms of the stringers need to be sitting on a concrete pad or brick base and not on bare ground.
  7. Install the 2 x 6-inch (5.1 X 15.2 cm) treads (again cut to length) parallel to each other with 1/8 inch (3 mm) spacing between the boards.
  8. [6]
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  • Question
    Can I buy a pre-cut kit?
    Community Answer
    Yes, most big-box hardware stores carry these.
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      Tips

      • Always use treated lumber for your stringers and treads and cedar for the riser.
      • You may need to add extra height to each riser if the ground around the porch slopes away. To get the amount you need, use a level and a long straight edge. Place one end on the porch floor and measure out from the edge to the end of the run. Now, measure down to the ground. Divide this number by the number of steps. Use that number for the height of the riser.
      • You may find it necessary to drill pilot holes to keep from spitting the wood when screwing them down.
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      Warnings

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      Things You'll Need

      • 4 foot (1.2 m) level
      • Tape measure
      • Electric or battery operated drill
      • 1/8 inch (3 mm) drill bit for pilot holes
      • Hammer
      • Circular saw
      • Hand saw or jigsaw
      • Carpenter's square
      • Spring clamps
      • Metal or wooden yardstick for a straight edge
      • 1.5 inch (3.8 cm) deck screws
      • 2.5 inch (6.4 cm) deck screws
      • Concrete drill bit
      • 2 inch (5.2 cm) Concrete nails
      • 2 x 12 inch (5.1 x 30.5 cm) treated lumber for stringers
      • 2 x 6 inch (5.2 x 15.3 cm) treated lumber for treads
      • 1 x 6 or 1 x 8 inch (2.5 x 15.2 or 2.5 x 20.32 cm) cedar boards for risers and/or toe boards
      • Waterproof deck stain or porch enamel
      • Concrete blocks


      About This Article

      Article Summary X

      If you want to build porch steps, measure from the top of the porch to the ground, then take the total height and divide it by the riser, which is usually between 6 and 8 inches. For example, divide 35 inches by a 7 inch riser to get 5 steps. Next, mark the steps on your stringers, cut out the steps with a saw, and attach the stringers to your porch. Connect the riser boards and treads, then finish your steps with a waterproof deck stain. To find out more about the parts of a set of steps, including what the run and stringers are, keep reading!

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      Reader Success Stories

      • Juanita Tucker

        Aug 28, 2016

        "The pictures showing how each step along with the written instructions were very helpful."
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