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Air Cell Pipe Insulation


Air Cell refers to an asbestos-containing pipe insulation product. It has alternating layers of plain and corrugated asbestos paper.  The term “Air Cell” was used as a product name by Armstrong Contracting and Supply Corporation and others.  However, the term “Air Cell” can also be used in a generic manner for various types of similar asbestos-containing pipe insulation.

How can you tell if pipe insulation contains asbestos?  Some pipes might be insulated with corrugated cardboard paper that contains no asbestos.  Others have cardboard paper, yet contain an inner-layer of asbestos insulation.  Some pipe insulation was adhered using an asbestos-containing mud/adhesive.  All of these may be referred to as “Air Cell”, but the only way of knowing the asbestos content is to perform a test.

The asbestos paper typically had 15%-25% asbestos. While most of the insulations may contain Chrysotile, several varieties may contain amphibole asbestos minerals such as Crocidolite.  Air Cell was typically covered with an outer wrap that does not contain asbestos.  

Ian Cull

Ian Cull is a nationally recognized expert in the field of indoor air quality. He is the Chief Science Officer of Indoor Science, a company he started in 2004. He speaks around the world on air quality topics and is a training provider of the Indoor Air Quality Association. Mr. Cull is a Licensed Professional Engineer (PE) and Certified Industrial Hygienist (CIH). His degree is in Environmental Engineering from the University of Illinois - Urbana Champaign. Mr. Cull has developed 50 air quality related courses for the IAQA University and is the author of the book, “Fundamentals of Mold Remediation”. In his words… “Besides being passionate about indoor air quality, I enjoy cycling, music, the Chicago Bulls, and having fun with my three kids.”

2 thoughts on “Air Cell Pipe Insulation

    Do you have photos of corrugated asbestos pipe covering and corrugated non asbestos pipe covering?