Types of Ductwork: Underground

2018-05-08T20:56:37+00:00

Common Types of Underground Ductwork in the Chicago Area

Understanding your ductwork is crucial so that when problems emerge, you are sure you are getting the right service.

Do you ever wonder what piping lies beneath your floor? Below is a list of the most common types of ductwork found in most homes today:

  • Galvanized Steel – The most common piping found in air duct systems, galvanized steel pipes are coated with a protective layer of zinc to inhibit mold growth. Over time, however, moisture from the ground causes them to corrode and deteriorate.

  • Cardboard Sonotube – Popular in the 1950’s, Sonotube pipes are made of thick gauge cardboard that quickly breaks down when exposed to moisture, allowing mold to thrive.

  • Transite – Widely used from the 1950s to the 1980s, these cement pipes have asbestos fibers mixed in them. The 80s brought awareness of asbestos and its harmful cancer-causing properties so use of transite pipes stopped.

  • Polyvinyl Chloride (PVC) – Commonly found in many homes today, PVC piping is durable and rust resistant yet very susceptible to mold growth.

  • Vitreous Clay Tile – Popular in the 1940s, vitreous clay pipes are connected using mortar or tar. These connections are not always airtight and therefore, allow air to escape – and debris and moisture to come in.

  • Concrete – Very similar to vitreous clay piping, concrete pipes are also connected using mortar or tar. These often loosely connected pipes allow air to escape and debris and moisture in.

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All types of underground ductwork are prone to drainage issues and other problems with age. Our repair and assessment services are suitable for any of the above duct types.

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If you are experiencing issues with your underground ducts or have any questions pertaining to them, feel free to give one of our experts a call at 708-758-5070.

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