About

Welcome!

I’m Helen Rogers, a Structural Engineer with a special obsession with cantilever stone staircases. I have worked as a consultant in the design of new staircases, the repair of old flights and analysis of collapsed flights for more than 20 years.

Along the way I have seen and read many interesting things to do with these staircases and this website was started as a place to keep my discoveries together.

I am always interested to hear about other people’s findings and experiences, so please get in touch if you have anything to add.

If you’d like me to take a look at your stair, then please email : helen@numberninety.net

Please do not reproduce any of the content of this website or photographs without permission,