Building a Spiral Staircase

A spiral staircase easily updates the look of just about any room. Before you decide to add one to your home, however, you should check to make sure that your building code allows for such an installation in your area and with your house. Installation is also quite a bit easier than it may look, especially if you are able to get a spiral staircase kit with all of the essential materials. Some staircases come already assembled, but here are a few easy steps to building your own spiral staircase.


Gather together these items before you begin your project:

  • Spiral staircase kit
  • Drill
  • Lag bolts (if not included with your kit)
  • Level
  • Safety Gear
  • Friends to help


It’s important to decide well ahead of time where your staircase will go. You will need to pour a concrete slab or install a pre-poured one to hold the pole of the staircase in the section of the property that you decide on. Concrete is particularly useful for outside staircases. You may just need a solid base to hold the pole if you are installing the stairs inside your house. Locate the plumb line and mark the area for the base plate by tracing it on the base.

Pole Installation

Drill holes for the lag bolts in the concrete and secure the base plate by ratcheting down the bolts. Once the base plate is secure, slide the pole in. It may need some coaxing or hammering to get it firmly into place.

Attach Risers

The risers, or steps, need to be attached to the pole next. Slide each one onto the pole and maintain balance by pushing them out to either side, alternating with the next. Evenly space the risers and bolt them into place. Once they are level and bolted in, secure the lag bolts for the pole plate at the base.

Attach Handrail

Spread the handrail out to the same length as the staircase. There should be spindles or stainless steel tubing you can use to secure the rail by screwing it down to the top of each spindle or tube. Although it doesn’t necessarily need to be pulled to the exact length, be sure to try to unfurl the handrail as close to the length of the staircase as possible before you start screwing it down.


Once you have secured everything in place, give your staircase a thorough inspection to make sure it has been installed correctly. Remember to consult an expert if you are ever unsure of the process or for a second opinion. Once you are satisfied with its look and ability to hold weight, all that is left is to enjoy your new masterpiece.

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Published on: March 15, 2015

Filled Under: DIY & Home

Views: 4299

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