Industry Leader

Located in Spring Grove, IL, Knoll Steel has been providing industry leading structural steel fabrication since 1986. Which is all made possible by our dedicated office personnel, shop foreman and crew, and field foreman and crews. Our company continues to grow as does our commitment to the steel fabrication industry. We are ready to assist you with your next project.

Humble Beginnings

From humble beginnings in Wauconda, IL to its present facility located on Route 12 in Spring Grove, IL. Knoll Steel, Inc. has grown rapidly since 1986. During that time we have installed structural steel in thousands of residential homes and erected many commercial buildings in the Northern Illinois/Southeastern Wisconsin areas.


Knoll Steel Inc. offers precast, hand rail and steel pan stairs, and custom steel fabrication. We pride ourselves on quick turn around with competitive quotations, dependable on-time quality installations and provide same day answers to customer service questions.

Contact Us

Call us today at (815) 675-9400 or email us at to see how we can help you complete your steel fabcrication or custom steel application project.

American Institute of Structural Steel, Inc.

American Institute of Structural Steel, Inc.