
What does loose asbestos insulation look like?
Vermiculite loose-fill insulation is one of the most common household materials that contains asbestos. Vermiculite insulation has a pebble-like appearance and typically is a grayish-brown or silvery-gold color. The raw vermiculite material taken from the mine was contaminated with asbestos. Click to see full answer.
How to identify dangerous asbestos insulation?
There are some physical characteristics to consider when examining your attic for asbestos:
- The insulation may be a gray-brown or silver brown color.
- The insulation again may have an accordion-like appearance that puffs up.
- The insulation can lay flat and firm against the joint cavities.
Does my insulation contain asbestos?
While most blown-in insulation contains cellulose fibers, if the house was built and insulated before 1950, the insulation might contain asbestos. Asbestos testing kits are available from hardware stores and lumberyards. If asbestos is present, an asbestos remediation contractor must remove the old insulation.
What does Loose Fill Asbestos look like?
Loose-fill asbestos insulation has a fluffy yet solid appearance and usually is grey/white with a blue tinge. It may look like lumps of clay to the untrained eye, so if you notice this anywhere in your building called the experts immediately. When did they stop using loose-fill asbestos?
How do I know if my insulation contains asbestos?
You can test the insulation for asbestos using an asbestos testing kit or by having a sample tested at an approved testing laboratory. If you discover that you do have insulation containing asbestos, you can leave it in place or have it removed by a local asbestos abatement company.
Does blown in insulation contain asbestos?
In fact, any insulation that comes in uniform sizes that are cut to fill your homes' unique contours is unlikely to contain asbestos material. If you have blown-in or loose-fill insulation, asbestos fibers may be an issue.
What is loose insulation made of?
The most common types of materials used for loose-fill insulation include cellulose, fiberglass, and mineral (rock or slag) wool. All of these materials are produced using recycled waste materials. Cellulose is primarily made from recycled newsprint. Most fiberglass products contain 40% to 60% recycled glass.
Was asbestos used in attic insulation?
Asbestos was mined throughout the United States and is possible in homes built before the 1990s as mines were still active. You can find it in flooring adhesives, roof shingles to pipe insulation. Additionally, it is one of the most common materials seen in attic and wall insulations.
When did asbestos stop being used in insulation?
Regulatory History. In 1973, EPA banned spray-applied surfacing asbestos-containing material for fireproofing/insulating purposes.
What happens if you breathe in asbestos once?
Once lodged in the lung tissue, these fibers can cause several serious diseases, including lung cancer, asbestosis (a scarring of the lung tissue) and mesothelioma (cancer of the lining of the lung cavity).
How can you tell asbestos from fiberglass?
Difference In Properties. Asbestos has a higher heat resistance and tensile strength properties when compared to fiberglass. Fiberglass is more temperature resistant than polyamide and cotton, but it isn't comparable to asbestos in this regard.
Does loose-fill insulation have to be blown in?
Loose-fill insulation does not necessarily need to be blown in using a blower machine. In essence, there are two ways to insulate your home with loose-fill insulation: Machine blown-in loose-fill insulation. Loose-fill insulation installed by hand.
What percentage of asbestos is found in thermal insulation?
Asbestos lagging - Asbestos content 55-100 percent Asbestos lagging has been used for thermal insulation of pipes and boilers. It was widely used in public buildings and system-built flats during the 1960s to early 1970s in areas such as boiler houses and heating plants.
How much exposure to asbestos will cause mesothelioma?
It often takes 20 to 50 years of harm before the first diagnosis. Mesothelioma cancer emanates from asbestos exposure. Approximately 2% to 10% of people with lengthy asbestos exposure will get pleural mesothelioma.
Should I remove old blown in insulation?
Expert contractors that specialize in insulation advise that removing old fiberglass insulation is best before installing new cellulose insulation because of possible mildew, mold, or rodent excrement.
Does fiberglass contain asbestos?
They don't always contain asbestos, and some types are much more likely than others to pose a risk. Some insulation materials — including fiberglass, cellulose, and mineral wool — rarely contain hazardous mineral. Others, especially vermiculite insulation, almost always contain asbestos.
Is blown in insulation safe?
When fiberglass insulation is moved or disturbed, it releases tiny particles into the air. If they get on bare skin they can lodge into pores and cause itching, rashes, or irritations. If they are inhaled, they can result in coughing, nosebleeds, and/or respiratory problems.
What percentage of asbestos is found in thermal insulation?
Asbestos lagging - Asbestos content 55-100 percent Asbestos lagging has been used for thermal insulation of pipes and boilers. It was widely used in public buildings and system-built flats during the 1960s to early 1970s in areas such as boiler houses and heating plants.
How can you tell asbestos from fiberglass?
Difference In Properties. Asbestos has a higher heat resistance and tensile strength properties when compared to fiberglass. Fiberglass is more temperature resistant than polyamide and cotton, but it isn't comparable to asbestos in this regard.
How much exposure to asbestos will cause mesothelioma?
It often takes 20 to 50 years of harm before the first diagnosis. Mesothelioma cancer emanates from asbestos exposure. Approximately 2% to 10% of people with lengthy asbestos exposure will get pleural mesothelioma.
Where is asbestos insulation found?
In the United States, most of the vermiculite insulation containing asbestos was sourced from a mine near Libby, Montana, which was active until 1990.
How to test for asbestos in insulation?
You can test the insulation for asbestos using an asbestos testing kit or by having a sample tested at an approved testing laboratory. If you discover that you do have insulation containing asbestos, you can leave it in place or have it removed by a local asbestos abatement company.
What is fiberglass fill?
If you have loose-fill insulation that is white and fluffy and has a little shine, it is probably fiberglass fill. Because it is a glass product, fiberglass has a slight shine when subjected to bright light. It is very soft, almost like cotton candy, and is composed of very fine fibers 2 .
What percentage of vermiculite insulation is asbestos?
Insulation made from this material represents over 70 percent of the vermiculite insulation found in U.S. homes. Because the Libby mine closed in 1990, houses built or remodeled before that date might have asbestos-containing insulation. If the house was built after 1990, the chance that your house has asbestos-contaminated insulation are reduced ...
What type of insulation is used in a batt?
Loose-Fill Insulation. If your attic or wall insulation is in batt or blanket form, whether it's fiberglass, cellulose, or another material, you generally don't have to be concerned about asbestos. The types of insulation that were most commonly made with asbestos are loose-fill, also called blown-in, insulation.
Is asbestos a breathing irritant?
At the least, asbestos is a breathing irritant. At worst, asbestos can cause mesothelioma, a cancerous condition that can lead to serious health problems or death. In older homes, specifically, asbestos may be found in many different materials, from pipe insulation to flooring adhesive to roof shingles.
Is asbestos fiber dangerous?
Asbestos fibers are most dangerous when they are airborne and can be breathed in. Leaving insulation undisturbed greatly reduces the risk of exposure. You can test the insulation for asbestos using an asbestos testing kit or by having a sample tested at an approved testing laboratory.
How to know if insulation is asbestos?
The only way to be certain about whether or not your insulation contains asbestos is to have qaulified professionals undertake asbestos testing. They have the training and expertise to not only identify areas of your home that could contain asbestos but do so safely.
What types of insulation contain asbestos?
Knowing that asbestos is extremely hazardous to human health, you may wonder why construction products contain it at all. The short answer is that it is a cheap and effective flame retardant.
How to identify asbestos insulation?
How can you identify asbestos insulation? 1 Zonolite is one of the most easily identifiable types of insulation containing asbestos. It is often grey and has a grainy consistency, much like gravel. It is usually applied without any sealant or covering, so it can be identified easily upon visual inspection. 2 Other types of asbestos insulation are harder to identify. If product markings are visible on the insulation, they may identify the brand and model of insulation. Once you identify this information, you may be able to contact the company and find out what ingredients your insulation contains. 3 You can also check with the construction company that built your house and ask if any of the insulation contains asbestos. However, the company that made the insulation or built the house may no longer be in business, so it may not be possible to get any information about the insulation used in your home. 4 You should also consider that exploring parts of your home that may contain asbestos is potentially very dangerous. Entering your attic or getting inside your walls could break up asbestos insulation and fill the air with asbestos particles, exposing you and your loved ones to considerable health risk.
What is pipe wrap insulation?
Pipe Wrap Insulation – Hot Water Lines. Asbestos insulation is also used anywhere else in a home where fire or heat poses some kind of risk. It is often used as insulation on boilers as well as hot water pipes. One especially popular insulation was Zonolite. It was sprayed and poured in attics as a cheap way of insulating these spaces.
Can asbestos be identified?
It is usually applied without any sealant or covering, so it can be identified easily upon visual inspection. Other types of asbestos insulation are harder to identify. If product markings are visible on the insulation, they may identify the brand and model of insulation.
Is asbestos in a house safe?
Is asbestos in homes really safe? As the Government of Canada says, it is safe so long as you don’t disturb it, but what they don’t say is that asbestos is very, very easy to disturb. It is actually quite hard to live in a house and not disturb asbestos from construction materials. Pipe Wrap Insulation.
Can asbestos be blown into the air?
Asbestos is very friable, meaning it breaks up easily into tiny particles. These particles become airborne and can float around on air currents in your home until you or someone else inhales them. So even if asbestos insulation is sealed into your walls, installing a wall-mounted TV or even just hanging pictures can release harmful asbestos particles into the air.
What Should I Do If I Find Vermiculite-Asbestos Insulation?
After an accredited organization determines contamination, you should hire a certified asbestos removal company to either completely remove or encapsulate (cover) asbestos materials.
What is asbestos used for?
Asbestos is a mineral that’s been used to reinforce insulation for decades. Additionally, vermiculite, another mineral with fire resistant properties, was also used for insulation long before (and after) people knew it contained varying levels of asbestos. Learn how to identify the toxic minerals when manufactured into insulation products.
What is toxic insulation made of?
Most toxic insulation is made of vermiculite contaminated with asbestos. The most common types of materials reinforced by the mineral with the toxin are paper, paint, adhesive, textiles, wood, drywall, or cement building items. Hot water and steam pipes, furnace ducts, attic or basement walls are the most common household structures to be aware of.
What is a vermiculite insulator?
Vermiculite-asbestos insulation resembles rocky gravel. It is installed by pouring it into the desired location. Insulators also refer to it as “loose-fill” and “blown-in” insulation. Colors to look out for in these pebbles are grayish, brown, or silvery gold. If your home was built before the 1990s and contains this texture and color, it may contain zonolite or some variation.
Can you test for asbestos in a home?
The EPA suggests testing for asbestos or zonolite in homes when the potential buyers discover worn down tiles, pipes, insulation, or other products. This is because when manufacturers produce products with asbestos or zonolite, it’s almost impossible to see it by just looking. Additionally, it’s dangerous to spend time trying to identify the mineral – inhalation of its toxic fibers can cause latent illnesses and cancers like mesothelioma.
Is asbestos a federal law?
No federal laws mandate property owners disclose the presence of asbestos in a sale. It must also be noted that while the mineral was banned in 1989, this law was overturned barely two years later in 1991. It wasn’t until 2019 that government officials outlawed most uses of the mineral. If you’re buying real estate, especially property made before the 90s, hire a certified company to test for it.
Is asbestos toxic to humans?
Manufacturers often use naturally occurring minerals like asbestos to reinforce many different types of building materials, including insulation, for decades. This was before researchers knew it was toxic to human health, and even for a long time after that. In fact, the legal use of asbestos didn’t stop until 2019. Therefore , it’s vital for property owners and real estate agents to recognize and detect materials that sometimes have asbestos and how they might appear together.
What To Do If I Suspect Zonolite Vermiculite Insulation?
If you have loose fill insulation in your wall or attic that fits the visual aspects above, you can verify if it contains asbestos with a DIY asbestos testing kit. If you would prefer not to be around the insulation, to be on the safe side a commercial firm can be hired for testing insulation for asbestos. Generally, DIY kits can be purchased under $50, which may be a cheaper route.
Is the Asbestos Institute the official authority for OSHA?
The Asbestos Institute is not the official authority to determine OSHA training requirements, which are set forth in the Occupational Safety and Health Act of 1970. OSHA regulations are always being revised, added, and/or deleted, so you must not rely on The Asbestos Institute as the official authority of OSHA asbestos training requirements. Visit the official OSHA Asbestos Training Requirements page here.
Is vermiculite insulation dangerous?
Vermiculite insulation alone is not dangerous, being a pellet style mineral, which expands with higher temperatures. In addition to building insulation, vermiculite is commonly used with gardening for loosening soil. More specifically, vermiculite insulation which was mined in Montana by the Libby company is one to watch for.
Is asbestos insulation a health hazard?
If you’ve got asbestos insulation in your property it poses a health hazard. Barrier insulation provides insulation removal services in the Phoenix Valley and is an insulation installation contractor. That means we can remove dangerous, damaged, or ineffective insulation and replace it with the highest performance insulation on the market. From spray foam insulation to loose fill blown in insulation we will help you choose a cost effective and high performance insulation solution to help keep you comfortable all year long.
Is zonolite asbestos?
Because Zonolite had been contaminated with tremolite, it resulted in being a health hazard. Tremolite is similar to asbestos. About 70% of U.S. vermiculite attic insulation originated from the Libby mine, while 30% came from other sources.
Can you leave asbestos in your attic?
Typically, it is recommended to simply leave it as-is without disturbing it. Otherwise, hire a professional asbestos removal company. However, there are loose-fill wall and attic insulation which can contain asbestos. If you’re insulation is the batt style insulation, as the loose fill insulation has the higher risk as it’s loosely poured ...
Can asbestos be removed from insulation?
In the event you find your insulation contains asbestos, it is best to locate an abatement company that has professional experience in handling asbestos removal, and never disturb the insulation. Although, asbestos removal is expensive, but if left it could cause many health issues for you and/or your family.
How dangerous is loose-fill asbestos?
Asbestos even loose-fill asbestos insulation that is tucked away behind walls and secured within the building is probably safe.
When did they stop using loose-fill asbestos?
This material was used across the 20th century, including the 1970s when many UK homes were built. However, its usage declined during the 1980s when more reports of problems appeared.
What does loose fill insulation look like?
Loose-fill asbestos insulation has a fluffy yet solid appearance and usually is grey/white with a blue tinge. It may look like lumps of clay to the untrained eye, so if you notice this anywhere in your building called the experts immediately.
Can asbestos cause lung cancer?
Do not attempt to continue with the work until you know for sure. Asbestos can lead to lifelong respiratory disorders – including lung cancer. Therefore, do not take the risk.
Is asbestos dangerous during renovation?
But renovation work has a habit of disturb ing the insula tion, and if this contains loose-fill asbestos, then it’s dangerous for anyone living or working nearby. Before work continues, the asbestos needs to be removed so the area is safe again.
Is asbestos used as insulation?
Asbestos was used as insulation for years in the UK, especially throughout the 20th century. Its usefulness saw it earn the nickname the ‘magic material,' and as it grew in popularity, its usage increased.
What Is Asbestos Insulation?
A relatively common term, “asbestos insulation” simply refers to home insulation material that contains asbestos. If you own an older home, the chances that you have some form of asbestos insulation are pretty high.
What is loose fill insulation?
Loose-Fill Insulation — blown into place using special equipment, loose-fill insulation comes in a variety of forms, but can almost always be identified by it’s fluffy texture.
Can asbestos be seen?
Although some of the more common types of asbestos materials, such as vermiculite insulation, can sometimes be identified by sight, other types can be extremely difficult to recognize visually. That’s why, in order to know for sure if you’re being exposed to asbestos, you need to test for it.
Is asbestos dangerous to homeowners?
Nowadays, most homeowners are aware of the dangers of asbestos. Unfortunately, before the 1980s, the risks were largely unknown to contractors and the general public. Back then, the material was frequently used, especially for insulation purposes. In fact, asbestos was once considered the gold standard for home insulation, and many homeowners are now paying the price.
Is asbestos a safe substance?
According to researchers, there is no safe level of asbestos exposure. Therefore, if you discover insulation in your home that you believe may contain toxic material, you should not try to remove it or inspect it closely by yourself. Instead, if you suspect an area may be contaminated with asbestos, especially if the material is damaged in any way, you should call a professional.
Can you drop off asbestos samples?
JSE Labs has a team of highly trained professionals to test materials in your home for asbestos so that you can ensure the health and safety of your family. You can drop off or mail your sample (make sure you wear gloves and take safety precautions) or contact us to schedule an in-home visit to have our experts collect and inspect your sample for you.
Is asbestos harmful to health?
There’s no doubt that inhaling fibers produced by asbestos can have a serious impact on your health and safety. The extent of asbestos use in the insulation of many homes in the 1900s has caused a plethora of these health issues in workers and homeowners.
How to tell if insulation is asbestos?
Treat any insulation as if it is asbestos if you’re unsure. Asbestos can be present in almost any type of insulation and can look very different than you may expect. There isn’t necessarily a surefire way to tell if your insulation has asbestos unless it’s labeled or you have an expert take a look. If you’re unsure if your insulation contains asbestos, play it safe and contact a professional to inspect it.
What is asbestos made of?
Asbestos is a naturally occurring mineral composed of thin, needle-like fibers that was once used as a popular building and insulating material. Exposure to asbestos can cause cancer and diseases like mesothelioma.
How to avoid conflict of interest with asbestos?
Use 2 different asbestos firms to avoid a conflict of interest. Hire an asbestos professional to inspect your building and assess your need for repair or removal of asbestos that isn’t tied to a firm that specializes in asbestos removal. They may try to rope you into paying for services that you don’t need.
How to find asbestos fiber?
1. Look for loose fibers between your walls and in your ceilings. Keep an eye out for light, fluffy fibers that are used as insulation. They could also be found stuffed in paper bags and inserted into floor joists. It could be loose-fill asbestos fiber, and is extremely dangerous.
Where can asbestos be found?
Asbestos can be found in the insulation used in walls, attics, the materials around plumbing and pipes, electrical wiring, as well as on heating and air-conditioning units. If you notice that you have insulation that is falling apart in your building, have a professional inspect for asbestos.
What color is loose fill asbestos?
Loose-fill asbestos fiber can be a pale white color, or it could be a darker, dirty color, depending on how old or how dirty it is.
When was asbestos used in buildings?
3. Look for asbestos in buildings built before 1980. Asbestos was a very popular insulating material from the 1930s to the 1970s. Older buildings, schools, and homes that were built during this time period are likely to contain some material that contains asbestos.

Preparation
Diagnosis
- How, exactly, can you identify whether your attic insulation is asbestos? Let's look at the particulars of loose-fill insulation that may contain asbestos.
Safety
- 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 ability to transmit water.
Other uses
- Vermiculite is also used for insulation, in particular, the vermiculite that was mined by the Libby company in Montana for about 70 years, under the brand name Zonolite.
Properties
- Although Zonolite is a mineral, it is lightweight, because during the production process it is subjected to high heat that causes the particles to puff up. If so, it is probably cellulose insulation. Cellulose has a high recycled paper content, no minerals. Close examination will show that this puffy gray material does not contain earth minerals at all, but will look like shredded gray paper. …
Types
- Another mineral-based loose fill insulation is rock wool, which frequently appears as bundles of fibers with a soft, cottony appearance. Rock wool is white, off-white or brownish-white. Rock wool is a manufactured product, made by melting basaltic rock and dolomite and adding binders. The raw material is heated to 2,750 degrees Fahrenheit until it melts. The molten material is spun int…
Risks
- If your loose-fill insulation fits the visual cues for vermiculite insulation, you can check to see if it is the asbestos-carrying Zonolite type by purchasing a DIY asbestos testing kit or seeking a commercial firm who can test for asbestos. DIY kits are usually available for less than $50. If you discover that you do have insulation containing asb...