Let’s Build What
You Need
Let’s Build What You Need
At Madon Sheet Metal, we specialize in precision-built roof curbs, curb adapters, TIG-welded stainless duct, and black iron grease duct. Our team also designs and fabricates custom carts, tables, and facility solutions, backed by detailed 3D CAD models and approval drawings that ensure every project is right before we start cutting metal for your project.
Our Custom Fabrication Capabilities
Our Custom Fabrication Capabilities
Our team of union sheet metal workers combines experience, precision,
and innovation to fabricate custom components built to perform and built to last.
Curb Adapters
This is what we are known for! Our adapters are fabricated to the highest quality standards and our spec drawings are the best in the industry.
Welded Stainless Duct
Our specialty! We offer TIG welded rectangular and round duct. Fully welded or vanstone rings available. Used for exhaust and collection systems.
Black Iron Grease Duct
Used in restaurant exhaust systems to capture smoke and grease away from cooking surfaces. Hot rolled A36 steel.
Aluminum Duct
Aluminum duct is a less expensive alternative to stainless steel in high moisture and humidity applications. TIG welded.
Galvanized Duct
Typically used for collection systems. We offer MIG welded rectangular and round duct. Fully welded or vanstone rings available.
Type II Hoods
Custom built for your project. Depending on your application, we fabricate type II hoods out of stainless, galvanized, or aluminum.
RTU Curbs
We fabricate curbs for RTUs, MAUs, and AHUs. Adjustable pitch and standard available. Built to your unit’s curb spec.
Fan Curbs
For general exhaust applications. Fabricated from a minimum 18 gauge G90 steel with fully welded construction.
Equipment Rails
Mounting pedestal for roof mounted HVAC equipment. Made to order. 2’x4’- 2’x12’ nailer size available. Customizable length and height.
Weather Caps
For industrial exhaust applications. Can be fabricated out of stainless or galvanized. Drawband or angle iron ring
connection available.
Curb Caps
Permanently cover obsolete roof curbs. Crossbreak prevents water from settling on the cap. Galvanized or stainless available. Order with or without insulation.
Custom Facility Solutions
Our design team will work with you to create fully customized, welded facility services. We custom build carts, tables, shelves, tanks, etc. to help your facility run safely and efficiently.
Why Builders Trust Madon
Why Builders Trust Madon
Contractors choose Madon because we make their jobs easier. From accurate drawings to dependable lead times, we’re a partner you can count on to get the details right, keep projects moving, and stand behind every piece we build.
Fast, Reliable Turnaround: We don’t waste time our team moves with urgency so you can meet your deadlines without compromise.
- Custom Work, Built to Spec: From one-offs to bulk orders, we deliver exactly what your job calls for down to the millimeter.
Decades of Industry Experience: Three generations deep in the trade, we know what works on the shop floor and in the field.
Request a Custom Fabrication Quote
Request a Custom Fabrication Quote
We bring creativity and craftsmanship together to deliver custom metal solutions that fit your space, your specs, and your schedule. Enter and upload your project information below and we will get back to you to get your project rolling!
Trusted by Industry Leaders Who Demand the Best
Trusted by Industry Leaders
Who Demand the Best
““The best quality in customer service and extremely quick turnaround. During an emergency, John quickly fabricated and delivered directly to our job site within hours.””
What Custom Looks Like at Madon Sheet Metal
What Custom Looks Like at Madon Sheet Metal
Check out some of our completed fabrication projects below!
Frequently Asked Questions
Frequently Asked Questions
We accept PDF, JPG, PNG, DOC, and CAD formats. If you’re not sure, just send what you have, and we’ll follow up.
Yes. Let us know your deadline we do everything we can to meet urgent timelines without sacrificing quality.
Absolutely. We ship nationwide and can coordinate delivery to your jobsite if needed.
No. We handle everything from one-off custom pieces to large production runs.
Detailed drawings help, but they’re not required. A rough sketch, dimensions, or a simple description is often enough to get started.
We regularly fabricate with galvanized, stainless, aluminum, and black iron. If you need something specific, just ask.
Yes, bring it in or send photos and measurements. We can reverse-engineer and fabricate to match.
We focus on fabrication, but we work closely with contractors and installers to make sure your components fit and function on-site.
We work across HVAC, industrial, food production, cold storage, energy, and more, wherever custom metalwork is needed.
Precision Metal Work Built to Last
Chicago’s Leading Provider of Custom Curb Adapters and Welded HVAC Fabrication Solutions. Proudly serving contractors, engineers, and builders across the region with precision-built components, certified welds, and fast turnaround you can
count on.
Chicago’s Leading Provider of Custom Curb Adapters and Welded HVAC Fabrication Solutions. Proudly serving contractors, engineers, and builders across the region with precision-built components, certified welds, and fast turnaround you can count on.
