CUSTOM STAIRS are built to meet any diameter or height required while enabling us to diversify our product line to include a variety of creative metal products and finishes to fit any individual need or décor.
KIT STAIRS are economical, functional and adjustable! Our kit spiral stairs start as low as $795 an inexpensive alternative to our custom staircases. Designed to work in any application, from spaces as small as 42” to 72.”
Our Wood Spiral Stairs are the first to introduce a unique hidden cantilever joint, adding strength and stability to the tread assembly in one simple connection. Provides an elegant and clean look of a solid wood stair.
Exterior Welded Aluminum Stairs add the perfect finishing touch to any deck or lanai, while adding beauty and accessibility. Built to last the harshiest environments, the aluminum used will not rust or corrode.
Balusters, pickets, spindles... these are the bones of a railing system. Steel, aluminum, stainless, brass or copper in round or square bars. Use the standard railing method or invent your own distinctive panel or stair railing.Building Codes
Superior Spiral Stairs’ railing and stair designs will meet compliancy with each of the requirements that are listed below. This information will apply to the BOCA Code, UBC Code, IRC Code, and IFC codes.
- Minimum clear walking path of 26 inches. A 5-foot diameter or larger stair will provide this width.
- Each tread will have a minimum tread depth of 7 1/2 inch at 12 inches from the narrow edge.
- All treads will be identical.
- The tread rise shall not be more than 9 1/2 inches high.
- Landing width shall not be less than the required width of the stairway. Minimum spiral stair tread width is 26 inches.
- Minimum headroom of 6 foot 6 inches shall be provided, measuring plumb from the edge of the landing down to the tread below.
- Stair balusters shall be spaced so a 4-inch object cannot pass between. The IRC 2003 & 2006 permits a 4 3/8 inch space.
- Balcony/Well Enclosure guardrail balusters shall be spaced so a 4-inch object cannot pass between. Balcony/Well Enclosure guardrail height shall not be less than 36 inches. (If your state or municipality requires 42-inch tall guardrails, the sales order must reflect this detail.)
- The stairway shall be equipped with one handrail on the wide edge of the tread.
- Handrail height, measured vertically from the tread nosing, shall be not less than 34 inches and not more than 38 inches.
- Handrail grip size. Handrails with a circular cross section shall have an outside diameter of at least 1 1/4 inches and not greater than 2 inches. If the handrail is not circular, it shall have a perimeter dimension not greater than 6 1/4 inches. Handrails with a perimeter greater than 6 1/4 inches, shall provide a graspable finger recess area on both sides of the profile.
- A 300 lb. concentrated load is required. Please see our detailed Blueprint/Standard Plan for more information.
*Superior Spiral Stairs’ standard code package does not address the open space between each tread (open rise stair). *IRC Code or IFC Code requires not more than a 4" space in this area, you will need to order a riser bar or modified tread to meet requirements. Please contact a consultant for more information.
*Please check with your local building department for the exact requirements for your area.