Expert reviewer

James Whitfield

Lead reviewer — measurement & installation · 12+ years · United Kingdom

James has spent over a decade around staircases — measuring, estimating and fitting stair runners on everything from tight Victorian winders to wide open-tread staircases in new builds. He built the Stair Runner Calculator after watching too many jobs stall because a runner arrived two feet short.

He reviews every measuring, installation and materials guide on this site line by line, checking that the numbers match how a runner is actually cut and fitted on site rather than how it looks in theory.

Areas of expertise

Measuring straight, winder and landing staircases for runner
Nosing wrap, waterfall vs cap-and-band installation methods
Pattern repeat matching and waste allowance
Stair rod spacing and fixing
Quoting and estimating for retail and trade

Experience & credentials

12+ years measuring and fitting stair runners and stair carpet
Hands-on experience across UK and US staircase standards and units
Author of the measurement logic behind every calculator on this site

Reviews on this site: Measuring guides, installation guides, calculator logic and cost data.

Spotted something wrong?

Measurement conventions and prices vary by country, supplier and staircase. If a figure in a guide doesn’t match what you see on site, tell us and it gets checked and corrected — corrections are logged in the guide’s “last updated” date.

Contact the editorial team

This profile is maintained by Stair Runner Calculator and describes the person who reviews our content. It is not an independent certification. Read our editorial standards. Profile URL: https://stairrunnercalculator.com/experts/lead-fitter-reviewer