Builder Spiral Stairs

Builder Spiral Stairs

Featuring fully stacked riser sleeves, Mylen’s builder spiral is the perfect spiral stair kit for almost every situation. The spiral kit comes standard with our exclusive 1 ½” diameter steel handrail and 1” square steel balusters. As with all of our spiral stairs, the stair can be customized to your taste with the addition of wood treads, wood handrails, and custom powder coat color finishes. This stair is durable and features the classic front-to-back baluster design along with the added strength inherent in the stacked riser sleeve design.  Additional variations include galvanized and powder coated aluminum designs for outdoor use. Offered in diameters of up to eight  feet, our adjustable spiral stair kit can be shipped in configurations that meet specific building codes.  Please feel free to contact us today by phone by calling 1-800-431-2155 or contact us via email, ask to speak to one of our stair designers to discuss your application.


At Mylen Stairs, we offer a large selection of features for your builder spiral stairs. Read below to view builder spiral stair options or feel free to contact us today.


  • Fully stacked riser sleeves
  • Available in diameters from 3’6” up to 8’
  • 1 ½” diameter steel handrail comes standard – a Mylen exclusive
  • Ability to be configured to meet building code



-Pre-drilled smooth steel (for wood by others)

-Diamond plate steel for slip resistance

-Wood tread covers (many wood species available)

-3/4” plywood for carpeting (carpet done by others)

-Fully formed wood handrails available (in place of steel)

-Additional stairwell/millwork available to match handrail on stair

-Custom powder coat color finishes are available