Cement asbestos roof shingles (C) Daniel FriedmanAsbestos Forms & Asbestos-containing Products & Companies FAQs
Questions & answers about products in which asbestos was or is used

  • ASBESTOS PRODUCT FAQs - CONTENTS: questions & answers f the forms & products in which asbestos was used& links to detailed articles about individual asbestos-containing products assists in recognizing asbestos-containing materials in buildings
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Asbestos product & application FAQs:

Questions & answers about the most-common forms in which asbestos was used in building materials & products. This article series provides a master list of the forms in which asbestos was used, a list of known asbestos-containing materials, and links to detailed articles about individual asbestos-containing products & materials found in buildings and in a wide range of products used in both home and industry.

Page top photo: a widely used form of asbestos-cement roof tiles.

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Questions & answers about Asbestos-Containing Products & Materials

Question: Do 1950's era Moffat Stoves, Ranges, & Ovens contain asbestos?

Moffat kitchen stove 1958 - insulation (C) BJ

[Click to enlarge any image]

Can you tell me if this insulation, in a Moffat 1958 kitchen stove model 30D25 contains asbestos?


Thanks so much - Anonymous, 2016/05/12 by private email

Question: (reader comment)

Thank You for all of the information, by far your site has composed the most complete list of items manufactured with asbestos. I will pass this information on as well. Thank You - Anon 4/30/11


Thank you for the nice comment about our asbestos products list. We add to it whenever we learn of other asbestos-containing materials and welcome contributions from readers.

InspectAPedia is an independent publisher of building, environmental, and forensic inspection, diagnosis, and repair information for the public - we have no business nor financial connection with any manufacturer or service provider discussed at our website.

We are dedicated to making our information as accurate, complete, useful, and unbiased as possible: we very much welcome critique, questions, or content suggestions for our web articles.

Question: Tell me about beaverboard containing asbestos

What can you tell me about BeaverBoard containing asbestos? - Laurel G. 6/7/11


Beaverboard is a wood fiber product.

Question: How can I know if a ceiling tile contains asbestos?

I have a ceiling tile 5028 MF4 9 REG on the back. How can I find out if it is asbestos? Patrick 8/30/11


Patrick, not recognizing the product numbers you refer to, you'd perhaps get fastest results by sending a small sample to a certified asbestos testing lab.

If you'd like us to take a look at the tile pattern send photos to us using the CONTACT link found on our web pages.

Question: 1961 Johns Manville floor tile in my apartment - how do I determine if it contains asbestos.

I have Johns Manville floor tile in my apartment that I think was put in around 1961 although might be earlier. It is 12 inch tile. Are there pictures of this manufacturer's tile on your website? How can I tell if it has asbestos? Thanks
Lisa 11/16/11


Use an approved asbestos test lab to examine a small sample of the flooring. Meanwhile, handle the material as PACM - presumed asbestos containing (non-friable) material.

Question: Reader does not like seeing a list of asbestos products - sells asbestos testing

This "master" list of asbestos [includes ...] speculative, redundant applications of asbestos from decades-old resources like D.V. Rosato's book. [...]

Furthermore, it is outright irresponsible to make any claim about "identifying" an ACM by visual means alone. The properly trained and ethical professional may properly make only assumptions about suspect asbestos materials or can use regulatory-defined determinations of certain historical materials and products as "presumed ACMs" (PACM), [...]

The only legally defensible manner of asbestos identification is by approved laboratory analytical microscopy methods by properly qualified and trained microscopists, EVERYTHING is a suspect material". Antonio Rico.


Antonio, we're sorry you don't like the asbestos information provided here. A still longer, photo-illustrated list of common ACM products is found at "ASBESTOS List of Asbestos-Containing Products" (article links listed at the "More Reading" links at the bottom of this article ) - with photos & links to articles of greater depth about individual ACM products.

You are correct that there are some deliberate redundancies in the list of asbestos-containing products and materials. We include more than one entry in the list under different alphabetical headings as that is how we have found people searching for information they need.

You are quite mistaken in condemning use of older texts as sources of lists of forms in which asbestos was used in a wide array of products. It is precisely those historically accurate sources that are more complete and insightful than a modern composer who will be unfamiliar with now-forgotten products & applications.

For example, Rosato was one of the most enthusiastic publishers of information about the uses of asbestos. Furthermore, Mr. Rosato is hardly the only authoritative source that we cite in these web pages (see references below).

You are correct that no single list of ACM products or manufacturers can be complete, and we welcome additional suggestions for forms, applications, or specific products that contained asbestos, for historical and technical accuracy.

As a trained microscopist who knows how to identify asbestos I must add that you could possibly not be more mistaken in claiming that only PLM microscopy can be used to reliably recognize all asbestos containing materials. There are some products whose physical makeup and appearance are unique, for which there are no "lookalikes" that are not ACM - such as the grey-white corrugated asbestos paper used as pipe insulation.

Other ACM products can be reliably identified by the combination of knowledge of age and appearance, such as certain flooring materials, cement asbestos roofing & siding, and depending on age, asbestos cement millboard. I have worked with quite a few asbestos abatement contractors, some of whom can walk into a building and say "Look, there's Tremolite asbestos insulating board used as fireproofing on that ceiling." Like the corrugated asbestos insulating material used on heating and some plumbing piping, countless field experiences confirmed by lab testing are behind that ability.

The public good would hardly be served by claiming that "everything is asbestos suspect" - doing so simply feeds public fear and fills the wallets of profiteers. We have published more information, photos, history, and basic consumer advice on this topic than is easy to find at other unbiased, researched informed sources, and we welcome thoughtful, informed, unbiased contributions from professionals in the field.

Finally, we recommend that when faced with a costly asbestos remediation project, professional confirmation of the material, writing of the remediation plan, and asbestos removal are indeed appropriate.

It is very rare to come across ranting [indicated by the ... brackets in the reader's original message above] by readers at InspectAPedia, but we always welcome constructive criticism, questions, or content recommendations from anyone, even ranters. InspectAPedia is an independent publisher of building, environmental, and forensic inspection, diagnosis, and repair information provided free to the public - we have no business nor financial connection with any manufacturer or service provider discussed at our website.

Question: does my fiberglass lined HVAC duct contain asbestos in the insulation?

I have an HVAC duct that is insulated with a paper faced fiberglass looking insulation. Is this insulation likely to contain asbestos? The paper facing has decayed and I want to encapsulate the duct but am concerned about asbestos. My house was built in the 60s but my guess is the HVAC system has been updated. The paper faced ducts come off the main sheet metal ducts. - Stuart E Roberts 11/28/11


Stuart, fiberglass is just that - glass fibers, and is not an asbestos containing product. Take a look at the fiberglass articles and photos found at INSULATION IDENTIFICATION GUIDE (article link at the "More Reading" links at the bottom of this article ) for some easy visual clues that can help you recognize the material you've got.

Indeed some HVAC ducts were wrapped with asbestos paper, typically on the exterior of metal ductwork, but I don't believe you will find any instances in which asbestos paper was used as a backer for fiberglass insulation in homes.

If you are facing a costly renovation or cleanup job, if you have other material (besides what is obviously fiberglass insulation) that is suspect, before beginning the project you can certainly send a small sample to a certified asbestos testing lab - it's not costly.

But don't bother testing fiberglass for asbestos. It's not.

Reader follow-up:

Thank you, I'm 99% sure what we have is kraft faced fiberglass insulation around our duct work. I was adding insulation to the underside of the back half of my house which is above a crawl space and noticed the duct insulation had deteriorated enough that air going to one bedroom is noticeably cooler than the rest of the house. Thinking about the current material on the ducts and the new material I was installing it looks identical. I think I'll go ahead with my plan to encased the duct but wear a bit more protective clothing and a mask. Thank you for your help! - Stuart 11/28/11


Stuart, insulating the ductwork exterior is of course good practice. But in a crawl space that might be damp or even wet, if you can use an insulating product that won't pick up moisture it'd be, IMHO, a better practice and would reduce the risk of the fiberglass forming a future mold reservoir.

Question: find out if an old small cooler I have has been insulated with asbestos

Hello, I'm trying to find out if an old small cooler I have has been insulated with asbestos or a similar product between the outer and inner layers. It's a 40s / 50s small red metal Pleasure Chest cooler, and is rusted through on the bottom - thus, my concern over exposure. I'm sure I'm being paranoid, but thought I'd ask the question - I've looked and looked and can't find any info on it's use in this application. Thanks for the response. - Scott 2/20/12


Your options are to spend [typically[ $50. on a test by a certified asbestos testing lab, or equally reasonable, treat the material as presumed-asbestos-containing (PACM) which means sealing over the rusted metal bottom of the cooler to prevent debris from leaking out into your space.

Question: asbestos in products made by several large companies

Can you tell me what products produced by Georgia Pacific, Johns Manville, and Owens Corning contain asbestos? - Concerned 5/9/12


Concerned the list is just too long for a Q&A; instead I suggest reviewing in particular the roofing and siding products made by those and other building product companies.

Question: asbestos in my chicken incubator?

I have an old, wooden, egg/chicken incubator made by Wisconsin Incubator Co. of Racine. It is lined on 3 sides by some type of fiber board that looks similar to asbestos. Do you know if this company made incubators with asbestos linings? - Carol 5/14/12


Carol, it was a common practice to use asbestos cement millboard in the construction of chicken coops, barns, boiler rooms, and some walk-in coolers. If that's what you have, it is cementious, not friable, and a potential hazard most likely if someone does something foolish like cutting, sawing, grinding, or demolishing to make a dusty mess.

Question: worried that a 12 year old floor lamp is shedding asbestos

I have a 12 year old floor lamp that I noticed has some sort of white material covering the fixture wires that go directly into the part where the light bulb screwed into. The lamp was broken and the fixture globe dangling and I wanted to cut that part off and convert the rest of the lamp stand into a candle holder. Dumb me, I cut the electrical cord right where the white fabric was and then mangled it with pliers, trying to detach it from the base. Now I am worried that the white cloth covering the cord was asbestos and I let asbestos get loose into the air of the house. I'm so terribly worried. My dad says the cloth covering was probably fiber glass because the lamp was only 12-13 years old, but I still feel worried. - Worried 5/20/12


Asbestos insulation on electrical wires is more likely to be found in theaters and inside appliances such as old toasters or ovens, not on a floor lamp. A floor lamp that's 12 year sold makes it manufactured in the year 2000 - not likely that a modern company would have used asbestos in the lamp wiring in that era.

Question: where & how do I look for asbestos used in cook stove or range insulation?

Dismantling a 1950s gas cooker appliance. The oven area is surrounded by a felt like blanket* insulator, the skin of the blanket is a metallic foil material.

I understand cookers between 1930 and 1980 used asbestos. Would you happen to know if I'm dealing with asbestos or other offensive materiel? If you're unable to assist, where would one normally turn? *on closer inspection I note that the blanket is a whitish coloured 'needle' type fibre perhaps 1.5 - 2" thick. Yours faithfully, D.B. - 8/27/2013

Reply: not enough data; are we looking at fiberglass? cement asbestos millboard? Something else?

D: from just your email I can't say what material you're looking-at. Indeed asbestos was used in many appliances as a fireproofing and as an insulator; more often as cement board.

"Needle-like" in your description makes me think of fiberglass but again, without even a photo guessing about asbestos content in an unknown appliance is just so much arm-waving.

White fiberglass, foil faced, may also have been used. To know what you're dealing with would require direct examination, perhaps some very sharp photographs of the material and the foil facing and any markings, or a lab test. I doubt that the cost of paid testing is justified unless some special question or expense has arisen.

Without more information it would be prudent to treat the material as "PACM" presumed asbestos containing material - even if ultimately we decide it was not.

Send along photos if you can. Such added details can help us understand what's happening and often permit some useful further comment. What we both learn may help me help someone else.

Question: is my gas meter made of asbestos?

(Jan 25, 2014) Barrie Glenn said:

The gas meter housing outside my house is damaged. I intended repairing it using a fibre glass repair kit but wonder if in fact it is made of asbestos. I think it would have been installed in the 1960's. Please can you advise.




Barrie I would not even consider, for a nanosecond, doing my own repair to a gas meter. The risks of a leak, gas wastage, fire or explosion are just to great, even if someone didn't care to pay much heed to what the gas company or gas utility and local building codes require.

I realize that in theory, working carefully with excellent preparation one could perhaps make a fiberglass repair patch that is reliable - and I guess if we were stranded on the NASA space station I'd consider trying it. But not otherwise.

Call your gas company and ask them to inspect and repair or replace the meter as they determine necessary.

By the way, it's doubtful that one could buy a modern fiberglass repair kit that contains asbestos. The kits we can find in auto repair stores, paint stores, body shops, etc. use a combination of a fiberglass cloth and epoxy resins.

Question: asbestos used in bed mattresses?

(June 2, 2014) Jackie said:

I was just wondering if asbestos was used in bed matresses. Inherited an old house and need to know what to be concerned about. Thanks!

Do you know roughly what years asbestos may have been used in bed mattresses? Just concerned as children have slept on these old matresses and now I am nervous. Never even thought about asbestos there.


Yes Jackie asbestos was used in a stunning array of products, including as fire-resistant fabrics and coverings.

Asbestos used in mattresses is discussed at ASBESTOS in MATTRESSES


Asbestos textiles are discussed at ASBESTOS TEXTILES

Question: asbestos used in toasters?

(June 21, 2014) Patti said:

I have an older toaster oven made by Mannin-Bowen product # 405014. It looks like the walls may be lined with Asbestos. should I get rid of it?


Patti, indeed some older appliances, including toasters used asbestos as insulation. I suspect that if the appliance is undamaged the asbestos released from it would be below the limits of detection. If its worrying you, however, that may be sufficient reason to tell the toaster goodbye.

Reader comment: asbestos induced cancer after working at Heating Elements Ltd., Wigston, Leicester

(June 26, 2014) Anonymous said:

my name is Gillian, I have just been told that my mother has asbestos induced cancer. 40 years ago she worked at Heating Elements Ltd in Wigston, Leicester. This terrible substance should never existed!

Question: asbestos in the oven?

(July 19, 2014) Tobes said:

Hi everyone, we have a "Shacklock chef 24 automatic oven", that is at least 40 years old. The handle began to come loose and so we removed the front to tighten it, inside was a faded brownish, batt-like insulation that is quite fibrous. We have no idea what it is, but would certainly hope it isn't asbestos, what do you think? Thank you


Tobes one cannot say for sure what insulation you describe from just a brief note, but it sounds like fiberglass or mineral wool.

Asbestos insulation was used in ovens and other appliances however.

Question: Asbestos in clothes dryer heat shieldsd

(Aug 28, 2014) Kat Cremmins said:

Can anyone tell me what clothes dryer manufacters used asbestor heat shields from 1960 to 1977? I know they had them I just don't know which ones they were. THANKS

Question: asbestos in chairs made by General Fireproofing Company?

9/26/2014 Carol Hoyt said:

I have a old chair in my office that I have sat on and been around itfor years. I was moving things around in my office today, and I noticed a gray dust coming from underneath the seat cover (which has been torn and only partially covers the seat). On closer inspection, it appeared to be coming a gray fiber padding underneath what remains of the seat cover. The chair's manufacturer is The General Fireproofing Company (Good Form), Youngstown, Ohio. It is finished to look like wood, but according to Google, is actually made from aluminum. Can you tell me if the seat cushioning contains asbestos?



The General Fireproofing Company in Youngstown OH was around from 1902 until a bankruptcy in 1989 (bought by Tang) and has a history of producing metal office furniture - perhaps in part for the fire-resistant furnishings market. Some of the company's office chairs include a padded seat whose padding is itself unlikely to be "aluminum". More likely it's foam rubber. Asbestos was used in some furniture padding but I have not found specifics about furniture products from the Geneal Fireproofing Company.

If you want an authoritative answer to the question: "did General Fireproofing Company Chair Padding contain asbestos" I'd spend the $40. to send a sample of the padding material (or the dust that worried you) to a certified asbestos testing lab.

On this page at Continue reading we provide an INDEX to RELATED ARTICLES that includes a live link to - ASBESTOS TESTING LAB LIST

Question: asbestos in solar panels from the 1970's?

(May 23, 2015) Bruce said:
is there asbestos in hot water solar panels from the seventies made buy Solar King


I don't know, Bruce, let's research it. Do you have contact information for the company or any product literature?

Question: my photos are tacked on to a board thast may be asbestos

(June 20, 2015) Kristin said:
Hi, I have many old photographs from the early 1900's that were placed on a hard board. It is worn and breaking apart now. Could this be asbestos?


Kristin, if the photos were placed on the board using thumbtacks chances are it's a wood product insulating board. Take a look at these articles to help sort out what you've got:

See the Asbestos millboard in CEMENT ASBESTOS SHEET PRODUCTS

See this wood hardboard product: IDENTIFY Masoniteā„¢ and other hardboard Sheet and Siding Building Materials

See this softer cellulose-based fiberboard product: SHEATHING, FIBERBOARD IDENTIFICATION

Question: Do old sleeping bags from the 1970's contain asbestos?

(June 20, 2015) Andy said:
Hello, I have an indoor children's "slumber party" sleeping bag probably from the mid to later 1970s. Unzipped it is very much like a bedspread or quilt. Wondering if the light fill or any component
might contain asbestos. Thanks.
flag like


Not too likely but I really can't say

Question: brick chimeny asbestos?

(June 30, 2015) Jazzylady44 said:
My contractor removed the wall in kitchen adjacent to dining room. He found the kitchen is a possible add on. He found the brick chimney with stack piping present with a white paste looking substance covering the bricks. There are bricks that fallen inside the wall. help?



I can't guess what help you need with so little information, but if the chimney is in use it's almost certainly unsafe if some of its bricks have fallen away. That's a more immediate fire or death by carbon monoxide hazard than an asbestos scare. Immediately shut down any heating appliances using the flue and ask for an inspection by a certified chimney sweep.

Question: knowing if a product has asbestos by its markings

(June 30, 2015) Anna said:
Is there a way of knowing if a product has asbestos by its markings; black star and black stripe on the back of a building product. Does it contain asbestos?



If you could match specific and unique markings to a specific manufacturer and product the answer could be yes on the identification of asbestos. But generally, stars and strips are a bit generic as a basis to assume we know what is in a material. Knowing the specific product, age, application, and if possible brand markings is more useful. A lab test is definitive.

Question: dark residue when wiping a linoleum countertop: asbestos hazard?

(Sept 5, 2015) Disa said:
Just bought a 1920s house in NY. The kitchen countertop is what I am assuming is linoleum, black with light wave pattern and a metal trim. Whenever I wipe the counter, dark residue is left on the rag and the counter is sticky, almost rubbery. What should I do? Leave it and seal it or remove it?




Continue reading at ASBESTOS LIST of PRODUCTS or select a topic from closely-related articles below, or see our complete INDEX to RELATED ARTICLES below.


Or see ASBESTOS PRODUCTS 1959 - returns to the chapter in ASBESTOS ORIGIN & NATURE where Rosato's Table 1.7 originally appeared.

Table 1.7. Asbestos Applications - this is a separate PDF file that provides the original Asbestos PPlications Table 1.7 from Rosato (1959) [1] from which the web article above was adapted.



Also see MESOTHELIOMA doctors, organizations, treatment resources, legal advice.

Suggested citation for this web page

ASBESTOS PRODUCT FAQs at - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.


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