Circular and Monumental Stairs

Duvinage has been designing and fabricating fine circular and monumental stairs since 1895. Designed with architects in mind, our single and double stringer designs form to a perfect contour. Our steel treads receive marble, wood, carpet, terrazzo, tile, concrete, glass, and more. Custom curved railings in metal and wood are our specialty.

We provide full shop drawings and Professional Engineering calculations for your stair, letting you concentrate on the architectural beauty without the worry of structural concerns.

Duvinage stairs are in The White House, The Ritz Carlton, The National Gallery of Art, and fine homes across the country.

Circular and Monumental Stair Product Lines

Helix Staircases

Helixed stairs follow a graceful curve to make a stunning architectural statement. Whether double or single stringer, circular or spiral, your helixed stair dream can be realized by our world-class engineering and fabrication team.

Double Stringer Staircases

Double-stringer stairs can appear to float, with an openness that impresses visitors while offering comfortable vertical ascent. Your project will be enhanced by the beauty that these stairs create. Custom designed and fabricated for your project.

Single Stringer Staircases

Single-stringer stairs (also called mono stringers) provide even more of a floating effect, cantilevered on a single center box stringer that allows you to see the full tread profile. The sleek lines often showcase treads of marble, granite, and wood.

Spiral Staircases

Also cantilevered, spiral stairs are a unique design element ideal for saving space while making a statement. Spirals have a center pole and thus can form a tighter diameter than circular or eliptical stairs. We have done spirals since 1895.

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