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Business Details
50+ Years
experience
Trusted Architectural Building Supplies & Services in Wisconsin
Block Iron & Supply has been a trusted partner in the architectural and construction industries since 1947. Our expertise lies in supplying high-quality Division 8 and Division 10 architectural components, including hollow metal doors, wood doors, hardware, toilet partitions, and wall protection systems. With four strategically located facilities across Wisconsin and a team of over 100 skilled professionals, we serve clients nationwide through comprehensive services such as welding, fabrication, carpentry, locksmithing, and installation. Our commitment to excellence is reflected in our 78-year legacy of delivering tailored solutions that meet project specifications while adhering to budget and timeline constraints.

We collaborate closely with contractors, developers, architects, and owners to ensure compliance with industry standards and code requirements. Our in-house capabilities, including machining and specification writing, enable us to provide seamless support from design to project completion. As a family-owned business for generations, we prioritize exceptional customer service and have completed over 20,000 projects, solidifying our reputation as a leader in architectural supply and support.
Services
Division 8 Products Division 10 Accessories Welding & Fabrication Carpentry Services Locksmithing Specification Writing Installation Services Custom Metal Fabrication Access Control Systems Door Hardware Supply
Details
  • Year established: 1947
Highlights and features
  • We have 78 years of experience in architectural supply and services.
  • Our team includes 100+ skilled professionals across four Wisconsin locations.
  • We offer nationwide installation capabilities for commercial projects.
  • Our in-house machining and fabrication ensure precision and quality control.
  • We specialize in meeting strict code and specification requirements for all projects.
Services
Division 8 Products
We supply hollow metal doors, wood doors, and hardware for commercial buildings. Our products meet industry standards for durability and safety. Clients benefit from our expertise in selecting materials that align with project specifications and budgets.
Division 10 Accessories
Our toilet partitions and wall protection systems enhance commercial spaces. We offer durable, code-compliant solutions tailored to high-traffic environments. Clients receive guidance on product selection to balance functionality and aesthetics.
Welding & Fabrication
Custom steel fabrication and welding services support unique project needs. Our skilled welders ensure precision and quality in shop and field applications. Clients gain access to tailored components that meet exact design requirements.
Carpentry Services
In-house carpentry handles wood door installation and custom millwork. Attention to detail ensures seamless integration with architectural designs. Clients receive craftsmanship that complements both traditional and modern commercial spaces.
Installation Services
Nationwide installation of doors, hardware, and partitions ensures professional execution. Our trained teams prioritize efficiency and adherence to timelines. Clients benefit from reliable service that minimizes disruptions during construction phases.
People
Rob Schaefer
President
Rob Schaefer leads Block Iron & Supply with a focus on client satisfaction and operational excellence. He oversees strategic growth while ensuring the company maintains its legacy of quality service since 1947.
Questions
What types of products does Block Iron & Supply Company offer?
We specialize in Division 8 (doors, frames, hardware) and Division 10 (toilet partitions, wall protection) products for commercial construction projects.
Do you provide services outside Wisconsin?
Yes, we serve clients nationwide through our four Wisconsin locations and mobile installation teams.
How long has the company been in business?
Block Iron & Supply Company has operated since 1947, providing architectural solutions for over 75 years.
Can you assist with project specifications?
Our team offers specification writing and design support to ensure products meet code and project requirements.
What installation services are available?
We provide nationwide installation for doors, hardware, partitions, and custom fabricated components.