Custom Double Stringer Stairs
The double stringer stair is an affordable option for homeowners looking for custom staircases. With a variety of materials and styles available, Acadia Stairs can match your new double stringer to virtually any design.
Double stringer stairs use two support members for their structure down under the treads and in from the edges of the stair for a floating look. The carriers for the treads are usually angle irons, flanged in toward the middle of the stair for a cleaner look from the side. Double stringers can be used in residential or commercial applications, as well as in both interior and exterior projects.
You’ll find extra support without all the bulk of a traditional staircase, allowing you to keep your space open and bright.

Affordability
In general, these modern-looking stairs are less expensive than single stringer stairs. We can use lighter material which also leads to easier shipment and installation for the average handy homeowner.
We can use any of the following materials for our floating design twin stringers:
- 2″ x 6″ Steel Tubes
- 6″ Steel Channels
- 4″ Steel Tubes
- 4″ Steel Channels
- I-Beams
- Aluminum
- Stainless-Steel

Versatility
This type of stair is extremely versatile, boasting the ability to feature nearly any tread and handrail style. It’s easy to create a design unique to your home or office with the various materials you are able to choose from:
- Wood
- Steel
- Stainless steel
- Stone
- Glass
- Rubber
- Ceramic tile
Double stringers can also be used on stairs that are wider than 48″. For example, a stair that is 60″ wide might have two 2″ x 6″ steel tube stringers set apart 32″ inches, leaving a 6″ overhang for the treads on each of the outer edges.
Double Stringer Designs
Work with our team of experts to design a double stringer staircase tailored for your style and space. From shop drawings to finished product, we are always striving to create exactly what you’ve envisioned. With a variety of materials and finishes at your disposal, we will be able to design a staircase that’s one-of-a-kind. And just because others have said, “it can’t be done,” doesn’t mean that’s true. Our team is ready to take on your next project and make the impossible, possible. Give us a call at 845-765-8600 to learn more about our double stringers and how you can start planning your staircase today!
Frequently Asked Questions (FAQs)
What are the advantages of choosing double stringer stairs?
Double stringer stairs are a popular option because they are affordable and versatile. They are more cost-effective than single stringer stairs, and their design allows for easier shipping and installation. These stairs also offer flexibility in terms of design, as you can choose from various tread and handrail styles.
Can double stringer stairs be used for wider staircases?
Yes, double stringer stairs work well for wider staircases. They can be designed to fit stairs that are wider than 48 inches. For example, a 60-inch wide stair can have stringers placed apart to support the wider width, providing a secure and stable structure.
What materials can be used for double stringer stairs?
We provide a range of materials for double stringer stairs. You can choose from steel tubes, steel channels, I-beams, aluminum, or stainless steel, each offering different benefits in terms of strength and appearance. These materials help create a durable and stylish staircase.
Are double stringer stairs customizable?
Yes, double stringer stairs are highly customizable. You can select from a variety of materials for both the stringers and treads. The design can be customized to fit your specific style and needs, whether you want a modern or more traditional look.
Are double stringer stairs easy to install?
Double stringer stairs are designed for easier installation. The materials are lightweight, which makes shipping and setting them up much simpler. With their versatile design, they can be installed to suit many different types of spaces and finishes.
How can I get a quote for double stringer stairs?
Getting a quote for double stringer stairs is simple. Just reach out to us, and we’ll send you a free estimate within 24 hours. This quick response helps you plan your project with ease.
What makes double stringer stairs different from single stringer or traditional staircases?
Double stringer stairs feature two parallel steel supports, typically placed under or beside the treads, offering enhanced strength and balance. Compared to single stringers, double stringers distribute weight more evenly and allow for wider spans. Unlike bulky traditional stairs, double stringer stairs offer a sleek, open design ideal for modern spaces. They’re a perfect blend of structural integrity and minimalism, providing both style and functionality without compromising on safety.
Can double stringer stairs be customized to fit unique layouts or architectural styles?
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Are double stringer stairs safe and code-compliant for residential or commercial use?
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What are the benefits of choosing steel for double stringers?
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Can double stringer stairs support heavy foot traffic or commercial loads?
Yes, double stringer stairs are an excellent choice for high-traffic areas like offices, retail spaces, and lobbies. The dual-stringer configuration offers superior load-bearing capabilities, especially when fabricated from structural steel. Acadia’s stairs are engineered to handle both residential and commercial use cases and can be fabricated with industrial-grade treads and finishes for added durability.
What tread options are available for double stringer stairs?
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Do double stringer stairs require central support posts?
Not always. One of the key benefits of double stringer stairs is their ability to span longer distances without needing a central support. However, in cases where the stair run is especially long or the treads are particularly wide or heavy, intermediate support posts may be used to ensure structural integrity. Acadia’s design team evaluates each project individually to determine the need for additional supports.
What is the typical installation process like, and do you provide installers?
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How long does it take to receive a custom double stringer staircase?
Lead times vary depending on design complexity and current production schedules, but most custom staircases are delivered within 6–10 weeks after design approval. This includes the engineering, fabrication, quality control, and crating process. Rush options may be available depending on capacity. Clients are kept informed throughout the process, from initial design to final delivery.