Leaking flue gases from ductwork can contaminate the surrounding area and deteriorate the duct. Regular inspections can help mitigate this risk.

Duct work is often overlooked, but combining your industrial duct work inspection with similar services can save you substantial time and money. Instead of hiring multiple contractors, National Chimney & Stack allows you to hire a single contractor with an outstanding safety record than can handle stack inspection and duct work simultaneously.


  • Internal and External Inspections of Odd Shaped Ducts
  • Process Piping and Vent Stacks
  • Internal Rope Access Inspections of Ducts as Small as 36"
  • Ultra Sonic Thickness Testing for Steel Ducts
  • Barcol Hardness Testing for FRP ducts