Trex® Spiral Stairs™ were developed by the leading spiral stair manufacturer in the country, The Iron Shop, under a trademark license agreement with Trex Company, Inc. Trex’s expertise in the manufacturing of wood-alternative decking and railing, and The Iron Shop’s commitment to high-quality craftsmanship, combine for an outdoor Spiral stair that is unmatched in beauty and durability.

Founded in 1931, The Iron Shop has earned a national reputation for outstanding design and fabrication of custom-built spiral stair kits, spiral staircases, curved stairs and floating stairs.

Trex is the world’s largest manufacturer of high-performance wood-alternative decking and railing products, with more than 20 years of industry experience. Combining superior durability and aesthetics, Trex also offers a truly environmentally responsible choice.

In addition to a variety of decking and railing options, the Trex product portfolio includes everything needed to create a dream outdoor living space – from LED deck lighting, stylish pergolas and outdoor furniture to innovative steel deck framing, drainage systems and long-lasting trim and fascia.

Trex products are engineered for long-lasting beauty and ease of maintenance and are backed by industry-leading warranties.

In Partnership


Proudly made in Pennsylvania, USA.

Trex ® Spiral Stairs ™ are manufactured and sold by M. Cohen and Sons, Inc., d/b/a The Iron Shop, based in Pennsylvania, under a Trademark License Agreement with Trex Company, Inc. A 25-year Limited Residential Warranty is provided by the manufacturer.