One outfit you dont want to use if you go with a Kit>>the iron shop.comI found a local welder shop that makes them in one peice,welded steel delivered with one coat black primer I put on two coats of finish after install. Much better quality way lower cost. John

@John Hyatt - I'm currently shopping for one myself and considering the Iron Shop (Trexspiralstairs.com) - it's the same entity. After you review, I'm reconsidering. Would greatly appreciate your advice and any pics you have as well. How may I find an excellent welder who builds spiral stairs in my area (Northern VA) as you indicated this is the way to go? Thank you!

I’ve had one stair from the iron shop and the ordering process was a breeze, the installation was as expected, and it looks great a decade later. My neighbors bought the same stair after me.

Thank you. Is t it the installation dependent on the contractor since iron works doesn’t install?

Yes the iron shop sends you a kit. So you or someone has to assemble. Lots of finnicky little pieces but straightforward. .