Asbestos in Glassbestos Exposure and Risks

Glassbestos is a trademarked combination of glass and asbestos that was used for building insulation and actively manufactured until 1982. Though an excellent source of insulation, Glassbestos has been linked to severe health issues, including asbestosis and mesothelioma, and was permanently discontinued.

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Asbestos in Glassbestos Explained

Glassbestos is an insulating material that was manufactured by Raybestos-Manhattan, Inc. and first trademarked in 1946.

Glassbestos came in 3 forms:

  1. Asbestos yarn with a glass core
  2. Woven cloth made from the asbestos and glass yarns
  3. Insulating tape

A fourth variation of Glassbestos, spelled “glassbestos,” used fiberglass instead of traditional glass, and was also a popular insulation choice.

Glassbestos was best known as home insulation used to keep temperatures warm and regulated. These cloth insulation forms of Glassbestos were widely used because they are strong, fire-resistant and could stand the test of time.

Did You Know?

Glassbestos Was Used for Fire Safety

Glassbestos insulation was common in residential and commercial buildings, providing thermal insulation while reducing fire risks. In a time when fires could quickly destroy a building, Glassbestos provided a major benefit. Unfortunately, the trade-off was asbestos exposure, which has since been linked to serious illnesses.

Glassbestos tape was another common construction material, appreciated for the same insulating qualities, as well as its flexibility and convenience. Asbestos tape can easily be applied to almost any surface.

Free Mesothelioma Justice Guide

Exposure to asbestos products like Glassbestos has led to thousands of mesothelioma diagnoses. If you’ve been diagnosed with mesothelioma, the Mesothelioma Justice Guide will help you understand your rights and know the next steps.

Request Your Free Mesothelioma Justice Guide Now

Who Was Exposed to Glassbestos?

Glassbestos was heavily used in the construction industry, in both residential and commercial products. Many people were exposed to asbestos in Glassbestos over the years including:

Anyone who worked on a construction site may be a victim of exposure to asbestos in Glassbestos. Friends and family members in regular contact with people who worked with Glassbestos may also have been exposed to asbestos and face serious health consequences as a result.

Even today, Glassbestos remains a health concern for construction and renovation workers. Any building insulated before 1982 may contain Glassbestos, endangering those who come into contact with it. If you’re assigned a work project that might put you at risk of Glassbestos or asbestos exposure, wear a respirator and strictly follow all asbestos safety protocols.

Health Risks of Asbestos in Glassbestos

Asbestos, a primary ingredient of Glassbestos, has been directly linked to severe and deadly health conditions.

When asbestos gets worn down or disturbed, microscopic fibers become airborne and may be inhaled by anyone nearby. Inhaled fibers tend to pierce the soft tissue lining of the heart, lungs and abdomen, becoming stuck. These rock-hard asbestos fibers are comprised of silicate minerals and impossible for the body to break them down.

Did You Know?

How Mesothelioma Forms

Asbestos fibers stay stuck in soft tissues, slowly affecting the cells around them. Asbestos can trigger a mutation that causes healthy cells to become cancerous mesothelioma cells, which can then multiply and spread throughout the body.

It takes 10 to 50 years for asbestos to mutate cells into mesothelioma, which means many victims haven’t been exposed to asbestos for decades before their diagnosis. Even worse for victims, mesothelioma rarely presents symptoms until it has progressed into its latest stages. At this point, mesothelioma is difficult to treat, leading to low survival rates for victims.

It’s hard for most people to imagine that something as seemingly innocent as Glassbestos insulation could have such a devastating effect, but it’s an unfortunate reality. Glassbestos is no longer manufactured, but it’s still present in many older homes and buildings, continuing to put innocent people and their families at risk.

Access Asbestos Trust Funds

Compensation for treatment, loss of income and other damages is available through Asbestos Trust Funds. Workers with mesothelioma and other asbestos-related illnesses may qualify.

Find Out If You Qualify

Seeking Justice for Asbestos Exposure

Raybestos-Manhattan Inc. has been the defendant in numerous lawsuits due to their negligence in exposing innocent people to dangerous asbestos products. Lawyers are helping thousands of people who were adversely affected by working with or around Glassbestos and other asbestos products.

If you have been diagnosed with mesothelioma, you may qualify for compensation from asbestos manufacturers, including those that created Glassbestos. If you are the spouse or child of someone who has died from mesothelioma, you may also be entitled to file a claim and seek compensation.

Contact the Justice Support Team to find out how you may have been exposed to asbestos in Glassbestos. Call us at (888) 360-4215 or request our FREE Mesothelioma Justice Guide to help you understand your next steps in seeking justice.

Mesothelioma Support Team
Stephanie KiddWritten by:


Stephanie Kidd works tirelessly as a dedicated advocate for the vulnerable and underrepresented. Stephanie worked as a copywriter for an agency whose focus was communicating safety procedures on construction work sites. With her extensive background in victim advocacy and a dedication to seeing justice done, Stephanie works hard to ensure that all online content is reliable, truthful and helpful.

View 3 Sources
  1. Justia Trademarks, “Glassbestos Trademark,” Retrieved from Accessed on June 27, 2018.
  2. Justia Trademarks, “Glassbestos Trademark,” Retrieved from Accessed on June 27, 2018.
  3. HowStuffWorks, “Is insulation dangerous?” Retrieved from Accessed on June 27, 2018.
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