Installing or Replacing Stair Treads? Get the Fit Right Every Time.
Even when your walls aren’t perfectly square, Step Doctor helps you accurately fit new stair treads and risers without complicated measurements.
Order Your Step Doctor
Step Doctor — $119.95
Free Standard Shipping within the Continental United States.
Step Doctor is an easy-to-use stair tread and riser fitting tool designed for DIY homeowners and professionals. Its adjustable arms capture the dimensions and angles of each stair opening, allowing you to transfer the fit directly to your new material without complicated tape measurements.
Why Use Step Doctor?
Accurate Fits—even When Walls Aren’t Square
Every staircase is slightly different, especially in older homes. Step Doctor captures the actual dimensions and angles of each stair opening, helping you transfer an accurate cutting pattern to your new treads and risers without relying on multiple tape measurements.
Less Wasted Material: New stair treads and risers can be expensive, and even a small cutting mistake can mean wasted material. Whether you’re installing hardwood or other suitable stair materials, Step Doctor helps you determine the correct fit before cutting, reducing trial and error and helping you avoid costly mistakes.
Designed for DIY Homeowners: Whether you’re renovating an existing staircase or installing new stair treads and risers, Step Doctor helps simplify one of the most challenging parts of the project—getting an accurate fit. Designed for DIY homeowners and useful for experienced installers, it helps you work with greater confidence and less guesswork.
See How Step Doctor Works
See Step Doctor in action as inventor George Ireson demonstrates how the tool helps capture stair opening dimensions and angles for fitting new treads and risers.
Is Step Doctor Right for Your Stair Project?
Step Doctor is designed for homeowners and DIY enthusiasts installing or replacing stair treads and risers. Whether you’re renovating an older staircase, replacing worn treads, or working on a new installation, Step Doctor helps you achieve an accurate fit—even when stair openings aren’t perfectly square. It’s also a practical tool for carpenters and professional installers.
What You Get with Step Doctor
Step Doctor is a durable stair tread and riser fitting tool made from molded ABS plastic. It features four adjustable arms with locking knobs that allow you to capture the dimensions and angles of a stair opening and transfer them to your new tread or riser material.
The tool comes with illustrated instructions to help you understand how to position, adjust, and use it for your stair installation project.
How to Use Step Doctor in 4 Easy Steps
Step 1 — Position Step Doctor
Place Step Doctor on the prepared stair structure, using a stable temporary support surface if necessary. Position the tool where the new tread or riser will be fitted.
Step 2 — Adjust the Arms to Fit the Stair Opening
Extend Step Doctor’s adjustable arms until they meet the skirt boards or sides of the stair opening. Tighten the locking knobs to hold the measurements and angles securely in place.
Step 3 — Transfer the Fit to Your New Tread or Riser
Carefully remove Step Doctor without changing the locked arm positions. Place it on your new tread or riser material and mark the cutting lines using the captured dimensions and angles.
Step 4 — Cut and Install Your New Tread or Riser
Using the cutting lines transferred from Step Doctor, carefully cut your new tread or riser material. Check the fit before securing it in place using the appropriate installation method.
Order Your Step Doctor
Step Doctor — $119.95
Free Standard Shipping within the Continental United States.