Asbestosis is an inflammation leading. Therefore the Micafil loft insulation is considerably more expensive!products. However, a lawsuit in 2008 dictated. Because it is lightweight, odorless, and fire-resistant, it has been used in many different products. Micalite Boards is checked by an independent laboratory for the presence of Asbestos. To help combat the cost of removal, the Zonolite Attic Insulation Trust was founded in 2014. Made from aluminium-iron-magnesium silicates, it is a natural mineral used for void filling. Some applications included ceiling tiles, soffit undersides, fireproofing in doors, and partition walls. Thermal Resistance: R Value: 16. , B. VAT) Excellent loose-fill thermal insulation material. Avoid unnecessary removal of harmless vermiculite insulation: if your vermiculite insulation does not contain asbestos it does not need to be removed. Micafil Vermiculite Specification: Material – Mineral (90%…EPA recommends that vermiculite insulation be left undisturbed. Chrysotile,Asbestos improper removal or disposal can be dangerous. The ZAI Trust not only pays a majority of the cost to have asbestos containing attic vermiculite insulation removed, but it pays for a majority of the cost to have the attic professionally air sealed and re-insulated to R50. Price of Micafil loft insulation. , Blanket insulation consisting Vermiculite insulation is a pebble-like, pour-in product and is usually gray-brown or silver-gold in color. Grace also was involved with asbestos mining. Asbestos was an obvious component to add to spray on insulation since it is fireproof and an excellent thermal insulator. Hello! I found on the attic of my 1956 house a few bags from old insulation Micafil vermiculite. Was purchased from the seller who was and still is a realestate agent. Vermiculite loose-fill insulation is one of the most common household materials that contain asbestos. 2 mm 0 – 20 Melting Point (°C) ~1330 % SiO 2 38. Risks of asbestos4trade foil tape 50mm x 45m. Navy official photo of a Vanguard rocket. Now a friend of mine has scared the hell out of me by telling me. Buy the excellent Micafil Chimney Insulation at Nationwide Chimney Components, designed to be used to insulate the cold air void between a flue liner and chimney stack. The difference between cellulose versus asbestos insulation varies greatly, as one material is more natural than the other. Get Started. from exposure to asbestos. 70 ex VAT, Each. If youre not sure whether or not you need to remove insulation due to asbestos, you should get in touch with an inspector to determine if removal is necessary. October 4, 2023. • Refractories. Spray-on insulation coatings made before 1990 usually contain a high percentage of asbestos. If you are going to replace your vermiculite insulation, you must take certain safety precautions. It also has a decent R Value, around 2. The Wisconsin Occupational Health Lab (WOHL) provides homeowners and businesses testing for asbestos in a wide variety of material such as floor tiles, ceiling tiles, pipe insulation, shingles, and more. Other constituent analysis are used to determine if the vermiculite is consistent with Zonolite. Similar Posts. Suitable for high temperature heating system insulation Lightweight and easy to handle Loose fill thermal insulation for interior use Used to produce lightweight and thermally efficient concretes and screeds A naturally occurring mineral Safe, inert and environmentally friendly; Dupre LTD MicaFil Grade Expanded Vermiculite 100L RVMV-L707D. Vermiculite from the Libby mine contains asbestos. It’s generally silver-gold or brownish-grey and looks like a. Once inhaled, most asbestos remains in the lungs. There was also a deposit of asbestos at that mine, so the vermiculite fromMicafil Vermiculite Model: Vermiculite Vermiculite is most commonly used for insulation and protection for solid flue liner pipe protection. What are the Insulation Properties of Micafil. Does Vermiculite Contain Asbestos? What is the Mixing Ratio to Mix Vermiculite with Cement? What are the Insulation Properties of Micafil Volume Calculator Downloads. Spray-On Asbestos Insulation – Typically thick gray coating found on ceilings. Pre-Owned. In general, vermiculite insulation is only dangerous when it is exposed. Cover the whole loft floor with a continuous heat trapping carpet of insulation, level. It has been used as a housing insulation since 1940, and still is used in many parts of the world. Vermiculite is not a problem! Asbestos pollution of vermiculite is the problem. Micafil Vermiculite Specification: Material – Mineral (90%…Vermiculite from other sources has since been tested and proven to be asbestos free and harmless. In 2014, a trust fund was established with $3 billion to compensate victims. Guide to using Micafil Vermiculite for Loft Insulation - Dupre Minerals. This sort of insulation typically comes in the form of Zonolite, a common form of insulation that appears as a pebble-like substance. However, to be safe and in the absence of evidence to the contrary, it is reasonable to assume that if your building has older vermiculite-based insulation, it may contain some amphibole asbestos. Of concern is Zonolite, a product made from vermiculite which was used in many Canadian. Collect a Vermiculite sample (Note: If you need to test a construction material other than vermiculite, please visit a different page). , vermiculite insulation, vermiculite block fill) must be treated as asbestos-containing material, regardless of its asbestos content. Q: Is in-home asbestos always dangerous? A: No. 30m2 to a depth of 100mm. 1The Mi Flues Screw-FIX Insulation Back Filler is a new concept to make the job of back filling your chimney with vermiculite as easy as possible when using a. It has a neutral pH. S. Found vermiculite (asbestos) under attic floor boards on top. Vermiculite is used in some potting soil for plant growth, and it appears as bright gold or silver flakes. The EPA has set a maximum exposure level of 0. 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. Also like the tip to use it as insulation for plants in winter, might try that too. What it is: A lightweight, shiny mineral that resembles mica flakes. October 4, 2023. Written by Tara Strand on May 4, 2018. Unfortunately, the mine also contained asbestos that contaminated the vermiculite. As a result, vermiculite insulation can cause health risks due to contamination with asbestos fibers. You can: avoid disturbing materials that may contain asbestos. Asbestos insulation materials were common in homes, schools and other buildings across the. from exposure to asbestos. Share this conversation. For use in horticulture, it's sold as lightweight, absorbent. It is now known to be a carcinogen and should not be used in any type of construction. Second, the vermiculite industry, which you use as half of your 'evidence,' is correct in saying 'vermiculite is not asbestos. GRADES OF VERMICULITE 50 Nominal Particle Size (mm) Loose Bulk Density (Kg/m3) Applications Large Grade (Micafil) 3 – 15 70 Insulation, Concrete, Refractories, Packaging, Extra winter drainage, bulb culture and storage. 6 hours ago · Vermiculite Insulation. , most vermiculite insulation containing asbestos was sourced from a mine near. It is not always necessary to remove the asbestos from the workplace or home. Eventually, the asbestos sunk close to the bottom of the insulation layer and concentrated along the floor. It is a limited-expansion clay with a medium shrink–swell capacity. When heated, it can expand to a much larger size than its natural form. I went to my local building supply looking for vermiculite to use as loose insulation over the ceramic fiber blanket I had wrapped around my oven. Vermiculite Micafil Loft Insulation. Modern vermiculite insulation, such as Micafil, will not cause health problems for homeowners. Alternatively, the inside chimney method is suitable for Vermiculite insulation. This ore is now known to contain a group of mineral fibers called “Libby Asbestos. came from a mine near Libby, Montana, that contained a deposit of asbestos which contaminated the vermiculite. Since the Libby mine was estimated to be the source of over 70Removal of the vermiculite insulation may not be necessary if it is confined in a manner where it will be left undisturbed. ), Nova Southeastern University (M. Today, most vermiculite is safe. Tremolite ranges in color from a milky white to a dark green and is found in other minerals such as talc and vermiculite. A particular brand of vermiculite was mined in Libby Montana by W. 1995. Zonolite insulation, an American vermiculite tainted with a lethal form of asbestos known as tremolite, has already been linked to hundreds of deaths in the United States. Asbestos garage roof removal cost. 5 – 3 mm 100 Kg/m 3Spray-applied surfacing asbestos-containing material. You can remove it yourself. Asbestos may still be found in many different building materials and products, regardless of their age. Large elasticity modulus. Also, it comes from naturally occurring materials on Earth. Did you find what you were looking for? Ask a Question. Next. 23 litres. Confirming whether your vermiculite insulation contains asbestos is the first step to determining what laws apply. The Process: 1. Micafil is typically used for chimney flue linings. The most common asbestos-containing vermiculite insulation is zonolite. Back-fill insulation. Thermal Transmittance: U-Value: This is the overall rate of heat transfer. If you have vermiculite insulation in your home, you should assume this material may be contaminated with asbestos and be aware of steps you can take to protect yourself and your family from exposure to asbestos. , Vermiculite Newark, NJ Mico Mineral. were deferred due to the presence of vermiculite insulation. Known as Micafil, expanded vermiculite is a 100% natural material that can be used for void fill. Vermiculite Boards. The EPA recommends that vermiculite insulation be left undisturbed. However, nearly 80% of the world’s vermiculite supply came from the asbestos-contaminated Libby, Montana mine. Asbestos Packing materials. Vermiculite insulation and any insulation installed. It fixes the chimney liner at the top of the stack using plates and clamps. Vermiculite Insulation and Asbestos. Therefore, the only way to definitively know is to have samples of the material in question analyzed. How I can figure out if there is asbestos in Thanks in advance Routa [email protected] Show More. Vermiculite is a naturally occurring mineral that was used as a household insulation product from 1940 to the 1990s. When it comes to asbestos, it rarely needs introduced at this point. Concrete additive. In general, vermiculite insulation is only dangerous when it is exposed. Have owned home just over 20 years. The verdict was the first of hundreds of cases pending against the company hired to oversee medical care and safety for. Is vermiculite insulation a problem? Prior to 1990, much of the world's supply of vermiculite came from a mine near Libby, Montana. 1-48 of 198 results for "Vermiculite Insulation" Results. Vermiculite attic insulation is a pebble-like, pour-in product and is usually light-brown or gold in color. Vermiculite - Micafil 100L pack. Most commonly, vermiculite was used for insulation in walls and attics across the nation. Vermiculite / Micafil is a highly versatile product which is used in many applications, it can withstand temperatures of up to 1000 degrees and we recommend this product for. £40. Only a trained technician using a microscope can see asbestos fibers. Extracted from the mine between 1920 and 1990, this vermiculite insulation was sold in large bags mainly, but not exclusively, under the trademark Zonolite® Attic Insulation. The Health Risks Of Vermiculite Containing Amphibole Asbestos Although the overall percentages of. Typical Bulk Density (kg/m³):- 85. While it’s true that undisturbed, encapsulated asbestos doesn’t pose a health. You might see it between joists in the attic and other areas. So, to recap, vermiculite insulation was banned due to health concerns surrounding asbestos contamination. Vermiculite Void Fill Packaging. Munn & Steele Vermiculite Insulation FAQs. It is made from mineral material. 62. Vermiculite-based insulation may contain asbestos. Vermiculite insulation does not burn and does not promote flame spread. 75 per inch. Vermiculite from Libby was. such as loose packing and rope and gasket packing materials used to seal pipe penetrations between building areas. size relative to paper clip . Vermiculite Insulation. Perlite & Leca. Vermiculite is still sold today, mainly for agricultural and horticultural use. These requirements also apply to renovations and demolitions of multi-family buildings with more than four. Ensure the contractor follows these procedures: Avoids spreading or tracking asbestos dust into other areas of your home. Wet-Spray Cellulose - Used as the blown-in method, a fine mist of water is added to the hose that allows for better heat retention and better noise reduction. These deposits contaminated the vermiculite, and then became transferred into people’s homes. What is vermiculite? Vermiculite is a mineral that expands when rapidly heated. Vermiculite Insulation. Some vermiculite insulation marketed between 1920 and 1990 may contain asbestos fibres. The majority of homeowners need to be educated on the general danger of breathing and disturbing asbestos fiber. Loft Insulation; Micafil Vermiculite Large Grade 100ltr; Micafil Vermiculite Large Grade 100ltr. Vermiculite insulation removal costs $4 to $10 per square foot. The medium is considered safe for commercial and personal use. Roof insulation is often supplied as foil insulation sheets which come in rolls. Asbestos Professionals. The processing and manufacture of Vermiculite continues to be one of our core business markets. It is installed by pouring it into the desired location. Ironically, in both studies, some of. Zonolite is contaminated with tremolite, a highly toxic type of asbestos. We provide exfoliated vermiculite from Micafil, the UK’s leading manufacturer. Vermiculite insulation is probably not a large concern, but only as long as it stays undisturbed in the attic. In its pure form, vermiculite is clean, odorless, nontoxic and sterile. Vermiculite is a loose fill insulation used mostly in attics and sometimes in walls. Homeowner Information. vermiculite at the lower portions (as asbestos settles to the bottom) - The cost for remediation is anywhere from $6,000 to $15,000, and possibly. Vermiculite is not asbestos and is a safe, highly versatile mineral used widely through the world in many products. g. If your insulation feels firm and lays flat, you might have asbestos and should have your insulation replaced as soon as possible. For several years, it was used as insulation in residential and industrial applications. It was once used to insulate crawlspaces (attics, attics with access doors, garrets, etc. 0). EPA, Exposure Evaluation Division, Office of Toxic Substances, Office of Pesticides and Toxic Substances, U. Become a trained and accredited asbestos professional. Zonolite Insulation. Loose Vermiculite. The maximum reimbursement the trust will cover is $4,633. Dupré Micafil Vermiculite Loose Fill Loft Insulation: Best loose-fill loft insulation. Attic insulation produced using vermiculite ore, particularly ore that originated from the Libby. Call Us: (630) 629-6600. Any ideas?Vermiculite is a 2:1 clay, meaning it has two tetrahedral sheets for every one octahedral sheet. The Environmental Protection Agency notes that when vermiculate is heated, it expands into worm-like. This loose-fill insulation makes vermiculite dangerous because the fibers can easily get through small cracks and into the home, making it difficult and time-consuming to. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk. Where does the asbestos come from and why is it a health concern? Vermiculite ores often contain a range of other minerals including, in some cases, asbestos. Testing of vermiculite insulation for the presence of asbestos fibers can be performed by specialty laboratories, however testing can be very expensive and may give false results depending on the methods used. Zonolite Insulation is the trademarked name of a product mined in Libby, MT, and sold as attic insulation between the 1940's and mid-1980's. This lightweight product creates a protective fill when placed into block core cavities. 5 – 3 mm 100 Kg/m 3The cost to remove insulation with asbestos in it can cost anywhere from $800 to $15,000. Concerns about Asbestos-contaminated Vermiculite Insulation. Researchers estimate that more than one million homes throughout. 43 Inc VAT. ZONOLITE INSULATION; In the U. 21 £21. , Montreal, Quebec, Canada Canec Hawaiian Cane Products, Ltd. Airborne asbestos fibers present a health. However asbestos-containing vermiculite insulation has been found in the Spokane area, Nolan says. Insulators also refer to it as “loose-fill” and “blown-in” insulation. Vermiculite attic insulation is a pebble-like, pour-in product and is usually light-brown or gold in color. 5–0. Great job, but today I find about 75% of Vermiculite by Libby etc in the USA contains a dangerous form of Asbestos. This property also allows for high water. If the fluff resembles a snow drift, you likely don’t have any asbestos. Is vermiculite insulation a problem? potential to release asbestos fibers into the air. However, due to limitations in the methods even trained technicians cannot always determine if. Airborne asbestos is dangerous because certain forms of it are quite effective and triggering a deadly form of lung cancer. It is vermiculite insulation. R. There are six types, all of which are composed of long and thin fibrous crystals, each fibre (particulate with length substantially greater than width) being composed of many microscopic "fibrils" that can be released into the atmosphere by. It is applicable for the construction sector. When heated to a high temperature, flakes of vermiculite expand as much as 8-30 times their original size. It is a limited-expansion clay with a medium shrink–swell capacity. Removal depends on: Where the asbestos is located, and. Over time, accumulated asbestos fibers can cause tissue inflammation and scarring, which can affect breathing and lead to serious health problems. This Dupre Vermiculite loose-fill insulation is a highly absorbent protector suitable for packaging, chimney lining, loft insulation and high-temperature insulation. There was also a deposit of asbestos at that mine, so the vermiculite from Libby was contaminated with asbestos. contain 1% or less asbestos, all loose vermiculite (e. , Mineral wool Chicago, IL Mineral Wood Armstrong Cork Company, Slab insulation made from Board Lancaster, PA rock wood with asphalt binder Mitchell & Smith Mitchell & Smith Co. The Zonolite Attic Insulation Trust may provide a reimbursement contribution of 55% of the abatement cost for eligible Claimants up to a ceiling of a $7,500 removal/reinsulation bill or $4,125. Approximately one million homes in the United States contain vermiculite attic insulation. We also do not recommend opening walls, ceilings, or floors to look for vermiculite insulation. Often used in commercial and industrial building walls, ceilings and beams, spray-on asbestos looks like a bumpy white plastic coating. Sold in multi-litre bags, this insulation can be installed by both builders and homeowners and is. Asbestos crystals that are found in vermiculate have a higher density than the rest of the insulation. Nearly all vermiculite contains asbestos, which can cause lung cancer when inhaled. SKU. If you disturb the insulation, you may inhale some asbestos fibers. For more information on these and other health effects of asbestos. Precision Casting. to 5%, vermiculite’s contribution to asbestos content of vermiculite materials used for thermal system insulation, surfacing materials and other miscellaneous ACM (e. These questions & answers about Mica-Fil, a Munn & Steele Vermiculite Insulation product and its asbestos content were posted originally at MUNN & STEEL & MICA-FIL VERMICULITE BUILDING INSULATION - be sure to see that article. MICAFIL, founded in 1918 and based in Zurich, Switzerland, established itself as technology leader in bushings through its manufacture of traditional types such as OIP (Oil Impregnated Paper) and RBP (Resin Bonded Paper) and insulation components. He states that is deception and claims we knew about it. The EPA recommends that vermiculite insulation be left undisturbed. AVD Fire. When heated to around 1,000 °C, vermiculite flakes expand and form pockets of air, making the material seemingly ideal for use as insulation. The mined vermiculite ore contained amphibole asbestos. size relative to paper clip . Inhalation of asbestos can cause lung problems. Low levels of asbestos fibers are present in the air, water, and soil. 3. It can also be seen on ceilings, where it looks like a thick coating of cement. Asbestos Insulation. That’s why it’s so much better to have an attic with no insulation at all. Hello! I found on the attic of my 1956 house a few bags from old insulation Micafil vermiculite. If you have vermiculite insulation in your home, you should assume this material may be contaminated with asbestos and be aware of steps you can take to protect yourself and your family from exposure to asbestos. The Zonolite mine, then owned by W. Used as kids bedrooms ever since. What is vermiculite loose fill? Vermiculite is a 100% natural material that can be used for void fill. Typical home attic can run $3,000 to $15,000 depending on the size and complexity. Vermiculite is a mica-type mineral that is being used in increasing quantities for insulation, in composite cements, and in horticulture. W. You can have it tested for asbestos, but here’s the rub. uk. Wet-applied and pre-formed. Asbestos has been used for a wide range of manufactured goods and building materials. Selikoff. TYPICAL PROPERTIES 1 based on primary vermiculite source Grade Nominal Particle Size / mm Loose Bulk Density / kg m-3 Large Grade (Micafil) 2 – 15 85Canasco Canadian Asbestos Co. OK- but is it appropriate for the insulating. While no longer produced, as many as 35 million U. 1998 became a member of the ABB group. Older homes (built prior to 1990) have insulation that can contain anywhere from 15 % asbestos to 100% asbestos. Vermiculite Micafil with its free flowing properties of loose-fill, make it an excellent insulation for lofts. It is typically light gray or yellow and has a crumbly texture. Is there any way besides getting a lab test done, to know if it contains asbestos? The bags are old and I took a picture of them before burning them. If you disturb the insulation, you may inhale some asbestos fibers. Doing a one-time removal job is not going to hurt you. These products commonly contained 15% asbestos to 100% asbestos. These pages are to assist homeowners with issues such as where asbestos may be located in their homes, finding a licensed asbestos contractor to safely remove asbestos and the health effects of asbestos. 2. Average artex asbestos removal cost (20m 2): £3,000. Layer structure and composition have much in common with mica group minerals (Fig. You can have it tested for asbestos, but here’s the rub. Asbestos as loose-fill insulation looks like shredded cotton. The Trust is expected to operate for a minimum of 20 years. More recently, Larson et al. Bag Size:- 100 Litres. The Zonolite product was vermiculite insulation, often used in residential attics. Vermiculite masonry fill creates a barrier against moisture, heat, and sound. In its pure form, vermiculite is clean, odorless, nontoxic and sterile. 20460> [1] Thanks to Gary Randolph, Ounce of Prevention Home Inspection, LLC Buffalo, NY, for attentive reading and editing suggestions. Protect Your Family from Asbestos-Contaminated Vermiculite Insulation . Identifying Insulation That is Made From Vermiculite. Asbestos can be found in many forms. Are you planning to test vermiculite for asbestos? If yes, then first you should watch our video explaining how important is to the testing professionally. Vermiculite insulation between attic joists . Item Code: 487280161. While the homeowners noted that neighbors up the road had just renovated a home similar in style and vintage to theirs and didn’t have an asbestos abatement, our clients quickly came to appreciate the steps we took to bring Lucas on. Vermiculite contaminated with asbestos was produced as late as 1990 from a mine near Libby, Montana. Asbestos fibers in vermiculite are too small to be seen by the naked eye. S. If the vermiculite in question even contained asbestos, abatement is too complicated for homeowners. 6 g/cm3 and a refractoriness of 1500–1600°C was produced from expanded vermiculite, and a technology for producing ceramic vermiculite. Micafil / Vermiculite Insulation Suitable for Aga Rayburn 100 Litre Bag. beta 1316 glucan ~ Indeed just recently is being browsed by customers around us, probably among you. Non-irritant and non-toxic, Micafil Vermiculite is a naturally occurring layered mineral, thermally expanded to produce highly aerated. However, that is not to say it cannot contain. How are Mica-Fil or Munn & Steele vermiculite products identified, & what should be done about potential vermiculite-asbestos hazards ascribed to this vermiculite insulation?. If you are going to replace your vermiculite insulation, you must take certain safety precautions. Asbestos Encapsulation Costs. Although the Libby. When heated to a high temperature, flakes of vermiculite expand as much as 8-30 times their original size. Vermiculite Insulation Board. F. Ashbrook roofing for low prices and next day delivery available. Most plants are in pots for now, I repotted everything with 40-50% vermiculite/50-60% compost and everything is doing much better. Call Today for Testing and Removal Services 1-833-367-7354. Recent findings about vermiculite ore contaminated with tremolite asbestos. 19 Ex VAT £25. In the U. The EPA recommends that vermiculite insulation be left undisturbed. Nominal Particle Size Loose Bulk Density Large Grade (Micafil) 3 – 15 mm 70 Kg/m 3 Medium Grade 2 – 8 mm 85 Kg/m 3 Fine Grade 0. It’s best to check with your State for a list of approved abatement contractors and get multiple estimates. The mine operated from the 1920s up to the 1990s and was. Vermiculite materials that are distributed under the brand Zonolite were discovered to contain Tremolite-Actinolite asbestos fibers. (Source: DSP Inspections) In the U. To ensure that your sample is unbiased, try to reach the bottom of the insulation and take your samples from there. g. Ex-Worker Wins $36. It was processed at 245 sites around the country, and contaminated vermiculite products were distributed nationally [ATSDR 2001a]. Search. It also enables you to keep the interior cool in warmer weather. These are lightweight with no harmful fibres or particles for easy and safe home installation. Asbestos Insulation. ) in homes. About 70 percent of the vermiculite used in attic and wall insulation originated from one mine in Montana. In its good years, the Libby mine accounted for more than 70% of. Average asbestos garage roof removal cost: £1,650. The Problem The largest supply of vermiculite came from a mine near Libby, Montana. The 37BVMB is a masonry block fill vermiculite that has a granular material which provides loose fill masonry insulation. Asbestos is commonly used for insulation because it is flame-retardant, strong, and resistant to chemicals. In response to this need the Healthy AIR (Asbestos Insulation Remediation) program was created, receiving a state allocation of $300,000 for fiscal years 2018 and 2019 for removal of vermiculite insulation in. Carry on browsing if. Currently, inspectors must send samples to off-site laboratories before. It was first described in Massachusetts early in the 19th century and was named for the Latin word vermiculare, “meaning to breed worms” because of the exfoliation process that occurs when it is heated. Libby is one of the largest asbestos contamination sites in the world, leading to vermiculite insulation contaminated with the mineral. There is limited evidence that asbestos exposure. (Source: DSP Inspections) In the U. Your chances of developing Mesothelioma from a brief exposure to vermiculite are minimal. Vermiculite was mined in Libby between 1923 and 1990. Asbestos (/ æ s ˈ b ɛ s t ə s, æ z ˈ-,-t ɒ s / ass-BEST-əs, az-, -oss) is a naturally occurring fibrous silicate mineral. The mine became inactive in 1990, so vermiculite loose-fill. If vermiculite is determined to beThis type of insulation is usually grayish-brown and looks somewhat like little pebbles. The amount of asbestos in asbestos containing materials (ACM) varies from greater than 1% to 100%. Regul Toxicol Pharmacol1995 Jun;21 (3):397-405. Vermiculite is still sold today, mainly for agricultural and horticultural use. Another study found that, among houses with vermiculite attic insulation, only 26% had detectable levels of amphibole asbestos in their living spaces. The only way to know the amount of asbestos in a material is to have it tested. Vermiculite Insulation. Zonolite is a trademarked brand name of a vermiculite attic insulation that was sold between the 1940s and 1990s. Zonolite is a loose-fill insulation brand commonly used to insulate attics. Even though there's loads, I've just ordered a second bag as I've used up the first one. However, some vermiculite insulation can contain asbestos fibres. Is there any way besides getting a lab test done, to know if it contains asbestos? The bags are old and I took a picture of them before burning them. The raw Libby ore was estimated to be 21–26% asbestos by weight; the mill feed was 3. in balloon. Airborne asbestos Last published: May 11,.