Vermiculite is a hydrous phyllosilicate mineral. It undergoes significant expansion when heated. Exfoliation occurs when the mineral is heated sufficiently, and the effect is routinely produced in commercial furnaces.
EPA Issues Vermiculite Insulation Warning WASHINGTON, D.C. —May 27, 2003—After receiving negative press attention for its failure to warn homeowners of the dangers of asbestos–containing vermiculite insulation, the federal government has finally launched a consumer awareness campaign about the material.
Concerns have recently emerged that some of the vermiculate insulation installed in some Canadian homes may contain asbestos. The concern involves insulation produced from vermiculite ore from the Libby Mine in Montana from the 1920s until 1990. It was sold as Zonolite® Attic Insulation and possibly other brands in Canada during that time. Vermiculite from the Libby Mine may contain asbestos ...
Homeowners and Home Inspectors may have justified concerns in wanting to have their Vermiculite Insulation tested for Asbestos. These concerns might include:
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 you have vermiculite-based insulation in your attic, it may contain asbestos. To avoid exposure to asbestos fibres, do not disturb vermiculite-based attic insulation in any way or attempt to remove it yourself. Make sure:
Great overall picture "I have been using Carson & Dunlop for 27 years for my clients' inspections. They do an excellent job and have been very truthful about structural concerns.
Vermiculite is a volcanic mineral that is fire-resistant and has strong insulation properties. The Environmental Protection Agency notes that when vermiculate is heated, it expands into worm-like ...
Vermiculite Removal The presence of asbestos in some vermiculite insulation has raised concerns with residential homeowners, buyers and sellers.
The Canadian Real Estate Association [email protected] Published June 2007 Information for REALTORS® BACKGROUND Vermiculite is a mica-like mineral mined around the world and used in a variety of commercial and consumer products because it is fire-resistant and has good insulation qualities. In the production process, thin sheets mined from the ground are popped by heat like …
2008-05-27· Hi All Don has mentioned several times about vermiculite insulation and the potential issues (now and future) with it. I was recently at a meeting and Pinchin Environmental (Toronto) gave a presentation regarding what they are finding out there in the field regarding vermiculite insulation.
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.
The main source of asbestos danger concerns vermiculite attic insulation, but not all brands or all sources of vermiculate pose a hazard. There is nothing inherently bad about vermiculite, which is a pellet-like mineral that expands at high temperatures and which is often used for gardening as an amendment that loosens soil and improves its ...
First you should ensure that your purchaser has a properly qualified home inspector who is aware of the concerns with vermiculite insulation. If a home inspection results in a determination that vermiculite insulation is either present or suspected to be present, a further specific inspection is required.
By Bruce Schundler ATTIC INSULATION CONCERNS: GOOD NEWS AND MISLEADING WARNINGS: On May 21, 2003, the Environmental Protection Agency issued its report: "A Pilot Study to Estimate Asbestos Exposure form Vermiculite Attic Insulation" (66 pages).
Vermiculite itself has not been shown to be a health problem. However, some vermiculite insulation contained asbestos fibres, which can cause problems if inhaled.
Dangers of Asbestos Contaminated Vermiculite Insulation in Your Home Vermiculite insulation between floor joists in attic.* Vermiculite is a popular insulation material, but much of the vermiculite used in the U.S. during the 20th century was contaminated with asbestos.
Vermiculite is mined from natural deposits across the globe and has a myriad of uses not only for commercial and private gardening, but also as an insulation compound. Vermiculite forms over millions of years due to the weathering of the mineral, biotite. Unfortunately, ...
2011-05-17· A while back I posted a blog on Environmental Concerns and gave a brief history on the use of asbestos in various products over the years. In the examples given, asbestos was purposely used to improve product performance.
As you read below you will find a detailed history of Vermiculite insulation and problems it had starting in 1920. Just recently I have become aware of houses built around or before 1920, yes 100 year old houses, where it was discovered that there was about 2 inches of Vermiculite under two
The danger of asbestos is over-rated for most who are seldom exposed to it, but it's still worth taking reasonable precautions for. The main health issues were with people who worked with it more regularly.
Vermiculite is a mineral used in a number of consumer products, including home insulation. Some vermiculite produced at Libby Mine in Montana from the 1920s until 1990, sold primarily under the brand name Zonolite®, has been found to contain asbestos. While not all vermiculite produced before 1990
Zonolite insulation is a toxic vermiculite-containing product found in attics of millions of older American homes, posing a potential danger to residents.
Vermiculite in insulation is a pebble-like, blown-in product and is usually light-brown or gold in color. Sizes of vermiculite products range from very fine particles to large (coarse) pieces nearly an inch long.
Vermiculite was a popular insulation medium widely used between 1940 and 1990. Vermiculite is often an Asbestos Containing Material (ACM), and poses a significant risk to your health. While not all Vermiculite contains Asbestos, vermiculite testing is required before the insulating material is disturbed.
Vermiculite Concerns Vermiculite - Click to Enlarge. Vermiculite is a naturally occuring mineral composed of shiny flakes, resembling mica. When heated to a high temperature, flakes of vermiculite expand as much as 8-30 times their original size. The expanded vermiculie is a light-weight, fire resistant, and odorless material and has been used in numerous products, including insulation for ...
For those not familiar with the Zonolite issue, it concerns asbestos content discovered in this brand of vermiculite insulation in the last decade or so. Much of the mineral used to make this insulation came from a single mine in Montana, owned by the company that produced the Zonolite brand of vermiculite insulation. It was discovered many years after installation that it had a significant ...
Concerns About Exposure If Your Family Removed or Handled Insulation That Contained Asbestos It is not possible to say whether your exposure may result in disease.
Vermiculite insulation may contain amphibolic asbestos fibers that may cause health problems. Buy your test kit online and do it yourself to save time and money