Honestly, almost never. The only downside is material cost (one extra pressure-treated 2x12) and about 15 minutes of extra cutting. Compared to the risk of a collapsed staircase or a lawsuit from a guest’s injury? It’s a no-brainer.
Even if your stair width is 36”, cut three identical stringers. The middle one prevents lateral twist. dual stringer stairs
Why have dual stringer stairs become a staple in high-end residential design? The answer lies in their visual versatility. Honestly, almost never
Dual stringer stairs are a modern architectural choice where two parallel structural beams—known as stringers—support the stair treads. Unlike traditional stairs that often use three or more hidden wooden supports, dual stringer designs typically feature visible, sleek structures on either side of the steps, often used to create a "floating" effect. Key Characteristics It’s a no-brainer
This process requires skilled craftsmanship. Poor welding or misalignment can lead to squeaking or structural failure, making it essential to hire experienced fabricators.
Choosing between a single (mono) and dual stringer depends on your design goals and budget: