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Just add steps* to our stair stringers
to get solid stairs (26″ and up) ready to
install in less than 1 hour!
32 models to choose from!
We ship from NY state, no sales tax!

Buy Direct! 2 to 5 days shipping
from $199 US + s/h
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Models & Prices Catalog

Modular Adjustable Steel Stair Stringers

Fast-Stairs® are adjustable steel stair stringers; simply screw step/treads (not included) to engineered stair stringers to build solid, square & plumb, free-standing stairs. Designed for fail-safe stair building for all, our 32 models can frame 2½ to 13 ft stairs. With perforated steel stringers you can fasten any stair finish materials you can find locally. Contrary to wood, dimensionally stable steel stringers won’t warp, crack, split, rot or shrink.

All starter packages contain left and right 16 gauge, double C channel, top and bottom welded steel stair stringer sections with middle slide connectors, 11″ height adjustable 1/4″ steel extra risers top hook straps (all powder-coated) and all zinc-plated connecting fasteners. Two-step extensions are also included in many of our Fast-Stairs® kits (Ex: An A6 kit includes an A4 and a A2; a B14 kit includes a B10 and two B2s, see assembly tutorial video for details). Fast-Stairs® are both permanent and re-usable and easy to customize.

Step/treads, railings and risers are not included with our stringers. Customers make or get those locally to their taste and budget. All pictures on our website were sent by customers having gone through this process. Fast-Stairs® specialises in providing what is the hardest part in building stairs (the frame) and what can’t be found elsewhere: modular adjustable steel stair stringers.

Fast-Stairs® offer do-it-yourself stair solutions for consumers, re-modelers, builders and contractors alike. There is no easier, faster or better way to build super strong and economical stairs.

Easy to carryWhat's in the boxAdjustable

Steel Stringers Kit

Adjustable Stairs / code info:

The top step/tread in any staircase can be level with the top floor/level, as long as it is as wide as the top floor/level opening. All Fast-Stairs® starter 10 step models come with height adjustable (every 1/4″) steel top hook straps which allow for one extra stair riser. Most building codes allow a 2° slope AND a 1/4″ variance between any riser heights, thus allowing a combined 2 1/2″ to 3″ additional adjustment up or down.

Most American residential building codes abide by the International Residential Code.

See our stair stringer selection
All photos and videos shown on this website were provided by customers.

Uses and testimonials

"The stairs worked out very well... assemble better and faster..."

- Ronald Palmer, California

"Fast-Stairs worked really well for our need to have a stair that is easy to install, looks good and blends well into our environment. Thank you Fast-Stairs"

- Sekar, Georgia

"Your stairs are great, easy to install. Just ordered another set for another house."

- Brian Fischer, California

"You have been an excellent person to work with. And man-o-man what a set of stairs. They are so strong and so easy to put together. Thank you and Fast-Stairs."

- George Settles

"The product was fantastic and have told many people about it and would not hesitate to purchase again in the future."

- Richard Morse, Mass.
See more photos and testimonials

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