Made in Colorado

Flatiron Steel proudly provides a wide selection of residential and commercial metal siding materials throughout Boulder, CO, Fort Collins, Loveland, and the surrounding areas. Our extensive inventory features the best materials for your project ensuring quality results that are durable and long lasting. Since 1993, we have been serving the area with superior siding material solutions for our customers.

Complete Selection of Siding Material

At Flatiron Steel, we offer siding material of all types so you can choose the options you need to complete your project. We serve a variety of different industries including residential, light commercial, agricultural, and industrial industries. When you need the best siding options offered at competitive prices, there is no need to go anywhere else. We can offer you the best materials at the most competitive prices in the industry.

Exceptional Customer Service

When it comes to customer service, we excel at offering the best service for our clients. Our materials are available for contractors and wholesale suppliers across Colorado State and we make the ordering process as simple as possible. At Flatiron Steel, we aim to provide all of the materials and supplies that you need with accurate order completion and end to end support.

Contact Flatiron Steel

We are happy to answer any questions you may have about our products. Give us a call for more information at (970) 284-6303 today. We look forward to supplying all of your siding materials in Boulder, CO and the surrounding areas. We have two locations to best serve the needs of our customers in Greeley, and Colorado Springs, Colorado. Give us a call today.


Energy Star


"I highly recommend the services provided by Flatiron Steel. They are not just a metal shop, they are professionals in all respects to the metal industry and customer service."

- Bill Goldsberry
Gold Roofing, Inc.

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Mercury 100