Welcome to NISMACNA – the association that's dedicated to raising the standards in the sheet metal industry. We are the direct source to contractors with union sheet metal workers in northeastern Illinois, including DuPage, Grundy, Iroquois, Kane, Kankakee, Kendall, Livingston, McHenry and Will counties.

When you choose one of our contractors, you get top quality craftsmanship. Our expert sheet metal workers know at the planning stages what materials, methods, and techniques will work and why. They know how to install commercial and residential air systems, furnaces and ductwork correctly, efficiently, and most of all safely... and they're fully trained, too, in architectural metal, metal roofs, metal wall panels and more.

The result: From equipment to air quality issues, from fabrication to installation and maintenance, our sheet metal workers don't just meet standards. They exceed them!