EPA is gathering more information about vermiculite insulation and other products containing vermiculite. If you suspect vermiculite insulation is in your home, the safest thing is to leave the material alone. If you decide to remove or must otherwise disturb the material due to a renovation project, consult with an experienced asbestos contractor.
What Is Vermiculite Insulation? It is an insulation product that contains a mineral called vermiculite that comes from mines in Libby, Montana and other mines across the United States and other countries. For more than 60 years, W.R. Grace & Co. dug vermiculite ore out of the Zonolite Mountain in Libby.
Vermiculite insulation is a pebble-like or rectangular, chunky product about the size of a pencil eraser, and usually gray-brown or silver-gold in color. Homeowners should be on guard for empty bags in the attic that bear the name Zonolite®, as this was the commercial name for vermiculite mined in the notorious Libby mine.
Worldwide, vermiculite has been used in various industries as long ago as 1920. With the upsurge in home ownership during the baby boom, vermiculite insulation was a popular material in the 1950's, and continued with the energy crisis into the late 1970's.
Vermiculite Insulation. Early 19th century homes have some of the most unique and elegant designs ever built to date. New materials, expanded structural methods, and the birth of the first precision tools in the early 1900's allowed American architects to adopt designs based on Greek architecture.
Apr 17, 2015· Vermiculite insulation was sold in bags to builders and homeowners under the Zonolite brand name. Founded in 1919, the Zonolite company was acquired by W.R. Grace Company in 1963. According to a 1985 estimate made by the Environmental Protection Agency (EPA), about 940,000 American homes were insulated with Zonolite.
Concerns about Asbestos-contaminated Vermiculite Insulation. A mine near Libby, Montana, was the source of over 70 percent of all vermiculite sold in the United States from 1919 to 1990. There was also a deposit of asbestos at that mine, so the vermiculite from Libby was contaminated with asbestos. Vermiculite from Libby was used in the ...
Vermiculite Building Insulation: properties, uses, asbestos content. This article permits visual identification of vermiculite insulation; we include our own as well as US EPA photographs of various forms of vermiculite insulation to assist in recognizing vermiculite in buildings.
Vermiculite is most commonly found in attics but was also used in walls. In is often hidden under layers of other types of insulation. Because it flows very easily, if there are holes from the attic into walls it can easily find its way from the attic to the crawl space, basement or even the living space.
The Zonolite Attic Insulation Trust (ZAI Trust) was created to help educate the public about the possible health effects of asbestos-containing vermiculite and to provide partial reimbursement for ZAI removal to qualified claimants.
Apr 24, 2018· The vermiculite from Libby is part of the longest man-made environmental disaster in American history. It was mined there for more than 50 years, ending in 1990. The insulation, which was known by the brand name Zonolite, is most often found in residential attics. What made the Libby vermiculite so dangerous was its proximity to asbestos deposits.
Nov 29, 2012· Vermiculite Insulation. Vermiculite is a natural mineral that possess extraordinary insulating and fire resistance properties. For this reason it has wide commercial and consumer applications such as fireplaces, acoustic panels, brake linings, soilless growing material, attic insulation …
Vermiculite is a mineral that is mined all over the world. Some vermiculite contains asbestos which is known to have dangerous effects on our lungs. The major draw to Vermiculite insulation is its unique ability to expand and provide better coverage, and therefore insulation, when heated. Vermiculite insulation's primary use was for insulating older homes which had little or no insulation when ...
One final note: although many home inspectors are aware of the contamination of asbestos in vermiculite attic insulation and will point it out to you when observed, it is often concealed under newer insulation and inspection for asbestos or any other environmental contaminant is beyond the scope of a home inspection as defined by the Standards of Practice of all the major home inspection ...
Regarding Vermiculite Attic Insulation. The U.S. Environmental Protection Agency (EPA) offices have received a large number of phone calls from citizens concerned about vermiculite insulation in their home that might be contaminated with asbestos. EPA is gathering more information about vermiculite insulation and other products containing ...
The majority of all vermiculite insulation produced before 1990 used contaminated vermiculite from Libby. Asbestos fibers in vermiculite are too small to be seen by the naked eye. Only a trained technician using a microscope can see asbestos fibers.
Jul 25, 2016· The EPA says that vermiculite insulation, which is the pebbly stuff found in attics of many older homes, is only risky if it contains more than 1 percent asbestos. That's good news, because most Zonolite, a vermiculite insulation, falls into that category.
Vermiculite is a very lightweight material, which made it a popular choice for thermal insulation from the 1920s to the mid-80s. It was used primarily as attic insulation- vermiculite was poured between attic joists and wall studs in areas where other types of thermal insulation would be …
Jul 06, 2016· The majority of Vermiculite insulation in Canada came from a mine in Libby, Montana under the trademark name Zonolite. Unfortunately, that mine also contained a deposit of asbestos (another naturally-occurring mineral), which contaminated the Vermiculite mined from that site, resulting in approximately 2-3% asbestos content in the Vermiculite.
Jun 15, 2016· Vermiculite insulation is way worse than I previously thought. I've known that vermiculite insulation can contain asbestos, and my advice to homeowners has always been to assume it contains asbestos and leave it alone, which is also the advice of the EPA. If the insulation needs to be removed or disturbed, my advice has previously […]