InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.
Asbestos-containing products made by the Celotex corporation.
The following list names and comments on building products such as ceiling tiles and many other Celotex® brand building products & articles listed by some sources as believed to contain asbestos.
This article series assists building buyers, owners or inspectors who need to identify asbestos materials (or probable-asbestos) in buildings by simple
visual inspection. We provide photographs and descriptive text of asbestos insulation and other asbestos-containing products
to permit identification of definite, probable, or possible asbestos materials in buildings.
Acoustical ceiling panels. Notes:
Asbestos fibers were used in some acoustic asbestos ceiling tiles, often amphibole asbestos such as amosite, crocidolite, anthrophylite, tremolite, and actinolite, with amosite among the most commonly-found. Modern ceiling products do not contain asbestos.
See ASBESTOS CEILING TILES .
Celotex Brand ceiling tiles - [Suspended ceiling tiles of the 2'x2' or 2'x4' dimension, and manufactured by Armstrong, Celotex, Conwed, LoTone, and USG and made before the late 1970's are listed by several attorney-sponsored "mesothelioma websites" as often containing asbestos to add fire-resistance. On that basis, if the age of your ceiling is in that range it would be prudent to treat it as PACM. Confirmation of asbestos content use & dates pending - Ed.]
Cane fiber products 
[Cane products were not an asbestos-containing product, though some may have been manufactured at facilities where asbestos was present - Ed.]
Celotex insulating lath (board),
Celotex interior finish,
Celo-Rok Gypsum products [some gypsum-based drywall as well as drywall compound may contain asbestos]: 
Celo-Rok anchor lath,
Insulating building panels or "fiberboards - [Fiberboard is generally a wood-fiber productd
See FIBERBOARD SHEATHING, Celotex Homasote & Other , but someproducts listed here include fiber-cement materials, probably due to confusion among attorneys who have erroneously lumped these materials together - Ed.
see ASBESTOS INSULATION.
1970: The Celotex Corporation of America introduced an isocyanurate foam ceiling tile  (not an asbestos-containing product). By this year, asbestos was widely used as fireproofing in roofs, floors, ceilings.
1999: US EPA Asbestos Materials Bans: Clarification. This document makes clear that EPA has no existing bans on asbestos-containing products other than items listed in this document: ACM ceiling tiles were not banned. Note: however because of public resistance to purchase or use of ACM products, many manufacturers discontinued of asbestos in various products, particularly after 1976. Check the individual product MSDS for confirmation of its content. - Ed. In this year Great Britain banned the sale or re-use of white asbestos. 
While an expert lab test using polarized light microscopy may be needed to identify the specific type of
asbestos fiber, or to identify the presence of asbestos in air or dust samples, many asbestos-containing building products
not only are obvious and easy to recognize, but since there were not other look-alike products that were not asbestos, a visual identification of this material can be virtually a certainty in many cases.
What is Celotex Insulating Lumber? Did it contain asbestos?
Reader question: I have a home built in 1940 that used a brown fiber board called "Celotex Insulating Lumber" looks like is was designed to be used as sheathing and lath. Made in either Chicago on Louisiana. Anyone familiar with this? Or know if it contained asbestos? - Dan Theisen 1/30/12
Dan, Celotex, a Chicago company, has been a producer of a wide variety of insulating sheathing boards for a long time and the company continues to produce modern insulating board products as well.
Our illustration (left) shows Celotex insulating lumber on the exterior of a Lebanon PA home. This insulating board is a wood-fiber product (actually made of bagasse fibers obtained from sugar cane) that we document in detail at SHEATHING, FIBERBOARD.
Asbestos was not among the product's ingredients.
Reader Question: asbestos in Celotex Gypsum Board (drywall) 4X8 panels?
5/21/2014 Jesse said:
I am buying a house that has unused Celotex Gypsum Board (drywall) 4X8 panels in the basement... the owner has offered to leave them for me to use when I finish the basement, but I don't know if they contain asbestos and can't find an answer online.
Jesse if you refer to celo.rock gypsum panels, some of those may indeed contain asbestos.muse the CONTACT link to send me sharp photos of both sides and an edge of the product and of any stampings or markings and I can comment further.
On receipt of photo (above) This looks like a quite recent tapered edge product. If so it would not be expected to contain asbestos. Do you know when it was bought?
The gentleman I'm buying it from says it is 10-15 years old... so '99-'04 would be my best guess. The house was built in '9.. so definitely bought after then.
Question: Do some Celotex® ceiling tiles contain asbestos?
We bought a house that was built in the 50's - it has what I THINK is a Celotex ceiling (or some copy of Celotex) - it's in horrible shape and needs to be taken down - what are your thoughts on it containing asbestos, considering the age? - Saundra
Reply: Yes. In the article above we provide a list of Celotex® fiber-board, ceiling covering, acoustical, sound control & other products that may contain asbestos
Keep in mind that Celotex and other insulating board panel and ceiling tile and panel manufacturers produced a range of products, many of which may contain asbestos, but others made of organic fibers, wood fibers, cane fibers may not contain asbestos. The Celotex ceiling products division was sold to Certainteed Saint-Gobain beginning in 1999. Certainteed continues to produce and sell both fiberglass and mineral-fiber ceiling products, as well as gypsum based ceiling materials. You may find look-alike products by searching that company's product catalogs.
Modern ceiling products do not contain asbestos. Using Certainteed as an example, [www.certainteed.com] you can obtain an MSDS (Material Data Safety Sheet) for each of the company's products. Common modern ceiling product ingredients include fibrous glass wool, urea formaldehyde resin, and fiberboard products contain slag wool, starch, cellulose [wood fibers], perlite, crystalline silica, and clay. It's worth noting that even modern building products can present health hazards if they are not handled properly. For example crystalline silica can cause nose, throat, and lung irritation. 
If you are not sure of the product brand and age of the ceiling covering, and are not sure whether or not the product contains asbestos, and if we accept as a "given" that your ceiling covering needs to be removed, there are two reasonable ways to proceed:
Dampen and remove a small sample of the material (about 1 sq.in.) and send it to a certified asbestos testing lab for identification. Typically the test is inexpensive (less than $100), and the result can close any argument about how to proceed with handling the material.
Assume based on age (for example an acoustical ceiling installed before 1973) that the material may contain asbestos and handle its removal accordingly. To be safe, I'd assume that an acoustical ceiling product made before 1981 contains asbestos, and I'd keep in mind that a ceiling installed even in the few years after 1981 could have made use of old stock made before that date.
For most projects and certainly any area as large as a basement ceiling, we recommend hiring a professional company who knows proper demolition and cleaning procedures. An amateur job of asbestos removal, even if it is legally permitted in your area, risks not only health hazards to the workers, but also the creation of a still more costly cleanup job if proper dust and debris control procedures are not followed.
To elaborate your question about asbestos-containing products made by Celotex, the company produced a wide range of fiber-based insulation products such as insulating boards and panels and the company continues to produce modern (non-asbestos-containing) versions of those products today.
At FIBERBOARD SHEATHING, Celotex Homasote & Other we include identifying photographs of some Celotex products.
Question: is it safe to clean Celotex board ceilings in our 1935 church?
Is it safe to clean the ceiling of our Church which has celotex boards and believed to have been installed in 1935? - Len Taylor 10/25/12
"Safe" depends - the greatest hazard of cleaning a church ceiling is falling off of a ladder. I don't know what kind of cleaning you are talking about, nor what the concern was; But if you avoid aggressive cleaning that damages the material and creates fibers and dust, you should be ok. Celotex fiberboard insulating panels are not an asbestos product - as you can read at SHEATHING, FIBERBOARD
Ask a Question or Search InspectApedia
Use the "Click to Show or Hide FAQs" link just above to see recently-posted questions, comments, replies, try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly.
Celotex ceiling products division was purchased by Ceiling Products & Gypsum Wallboard (BPB) of the U.K. beginning in 1999
Celotex roofing products division was purchased by Certainteed Corporation (Valley Forge PA) beginning in 1999
 Certainteed Ceilings, Adagio fiberglass/mineral fiber composite acoustical ceiling product MSDS, web search 11/22/2011, original source: certainteed.com/resources/Adagio_MSDS_2010.pdf
 "Board of Education for the School District of the City of Detroit v. Celotex, et al., Circuit Court of Wayne County, Michigan, No. 84-429634-ND"
 Armstrong Corporation, web search 6/22/12, original source: http://www.armstrong.rs/commclgeu/eu1/uk/rs/FAQ_other.html, [Copy on file as Armstrong_Ceil_Asbestos.pdf]
 Lipsitz & Ponterio, LLC, "Carpenters and Mesothelioma", Lipsitz & Ponterio, LLC, 135 Delaware Ave, 5th Floor, Buffalo, NY 14202-2415 (716) 849-0701. Web search 6/22/12, original source: http://www.mesotheliomacarpenter.com/carpenters-asbestos-exposure/ceiling-tile/ [Copy on file as LiIpsitz_Asbestos.pdf]
 INACHI forum discussion about asbestos ceiling tiles, web search 6/22/12, original source: http://www.nachi.org/forum/f18/asbestos-ceiling-tiles-14709/ [Copy on file as Inach_Ceil_Asbestos.pdf]
 Celotex [UK] History, Celotex Insulation Specialists, web search 6/30/12, original source: http://www.celotex.co.uk/celotex-history [Copy on file as Celotex_History_UK.pdf ]
 Wikipedia provided background information about some topics discussed at this website provided this citation is also found in the same article along with a " retrieved on" date. NOTE: because Wikipedia entries are fluid and can be amended in real time, we cite the retrieval date of Wikipedia citations and we do not assert that the information found there is necessarily authoritative. Web search 6/30/12: "Ceiling Tiles"
 Brian Greer, "History of Tin Ceilings", Brian Greer's Tin Ceilings, web search 6/30/12, original source: http://www.tinceiling.com/company/historytin.php
 Armstrong Corporation, "Corporate History: a Historical Summary", web search 6/30/12, original source: http://www.armstrong.com/corporate/corporate-history.html
 "Ceilings Pressed in Time", Old House Journal, web search 6/30/12, original source: http://www.oldhousejournal.com/ceillings_pressed_in_time/magazine/1070
 Steven Mlynarek, Morton Corn, Charles Blake, "Asbestos Exposure of Building Maintenance Personnel", Regulatory Toxicology and Pharmacology, 23, 213–224 (1996) ARTICLE NO. 0045, http://library.certh.gr/libfiles/PDF/GEN-PAPYR-4810-ASBESTOS-by-MLYNAREK
 National Institute of Occupational Safety and Health (NIOSH) (1989). In NIOSH Manual of Analytical Methods (P. M. Eller, Ed.),
Method 7400. NIOSH, Washington, DC.
 U.S. Environmental Protection Agency (USEPA—Green Book) (1990). In Managing Asbestos in Place: A Building Owners Guide to Operations and Maintenance Programs for Asbestos-Containing
 U.S. Department of Labor, Occupational Safety and Health Administration (USDOL) (1994). In Occupational Exposure to Asbestos:
Final Rule, FR Vol. 59, No. 153:40964–41162. Materials, Report 2OT-2003. USEPA, Washington, DC.
 U.S. Department of Labor, Occupational Safety and Health Administration
(USDOL) (1986). In Occupational Exposure to Asbestos: Tremolite,
Anthophyllite, and Actinolite: Final Rule, FR Vol. 51,
 U.S. Environmental Protection Agency (USEPA) (1990). In Environmental Asbestos Assessment Manual, Superfund Method for the Determination of Asbestos in Ambient Air, Part 2, Technical Background Document, Report EPA/540/2-90/005 b. USEPA, Washington, DC
 Ceiling - Frequently Asked Questions, Armstrong Corporation, web search 6/30/12, original source: http://www.armstrong.com/resclgam/na/ceilings/en/us/article17697.html
 BPB America Inc.,
5301 West Cypress St., Suite 300,
Tampa, FL 33607,
Web: www.bpb-na.com. Acoustic ceiling tile & accessories.
 Affa Tile Company
No. 1116/8, Poonamalee High Road, Opposite Hotel Shan Royal, Koyambedu
Chennai, Tamil Nadu - 600 107, India, E-Mail: firstname.lastname@example.org website: http://www.affatiles.com Tel:044-24757498, 044 - 24757497
 Made-in-China.com, online sevice to connect buyers with product suppliers in China, web search 6/30/12
 "Directive 2003/18/EC of the European Parliament and of the Council of 27 March 2003 amending Council Directive 83/477/EEC on the protection of workers from the risks related to exposure to asbestos at work". Publications Office of the European Union. 27 March 2003 Web search 6/30/12, original source: http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32003L0018:EN:NOT,
 H. M. Murray, testimony before the Departmental Committee on Compensation for Industrial Diseases "Minutes of Evidence, Appendices and Index", 1907. p. 127
 D. Auribault, "Note sur l'Hygiène et la Sécurité des Ouvriers dans les Filatures et Tissages d'Amianté (On hygiene and security of the workers in the spinning and weaving of asbestos)" in Le Bulletin de l'Inspection du Travail, 1906, pp 120–132.
 Wikipedia entry on Asbestos and various citations from that article, web search 6/30/12, original source: en.wikipedia.org "Asbestos"
Asbestos Identification and Testing References
Asbestos Identification, Walter C.McCrone, McCrone Research Institute, Chicago, IL.1987 ISBN 0-904962-11-3. Dr. McCrone literally "wrote the book" on asbestos identification procedures which formed
the basis for current work by asbestos identification laboratories.
Stanton, .F., et al., National Bureau of Standards Special Publication 506: 143-151
Pott, F., Staub-Reinhalf Luft 38, 486-490 (1978) cited by McCrone
Asbestos NESHAP Adequately Wet Guidance, EPA340/1-90-019, December 1990, U.S. ENVIRONMENTAL PROTECTION AGENCY, Office of Air Quality Planning and Standards, Stationary Source Compliance Division, Washington, DC 20460,original web source: http://www.epa.gov/region04/air/asbestos/awet.htm
Asbestos products and their history and use in various building materials such as asphalt and vinyl flooring includes discussion which draws on Asbestos, Its Industrial Applications, D.V. Rosato, engineering consultant, Newton, MA, Reinhold Publishing, 1959 Library of Congress Catalog Card No.: 59-12535 (out of print, text and images available at InspectAPedia.com).
"Handling Asbestos-Containing roofing material - an update", Carl Good, NRCA Associate Executive Director, Professional Roofing, February 1992, p. 38-43
EPA Guidance for Controlling Asbestos-Containing Materials in buildings, NIAST, National Institute on Abatement Sciences & Technology, [republishing EPA public documents] 1985 ed., Exposure Evaluation Division, Office of Toxic Substances, Office of Pesticides and Toxic Substances, U.S. Environmental Protection Agency, Washington,D.C. 20460
Home Inspection Education Home Study Courses - ASHI@Home Training 10-course program. Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on these courses: Enter INSPECTAHITP in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
The Home Reference Book, a reference & inspection report product for building owners & inspectors. Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. Enter INSPECTAHRB in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
The Home Reference eBook, an electronic version for PCs, the iPad, iPhone, & Android smart phones. Special Offer: For a 5% discount on any number of copies of the Home Reference eBook purchased as a single order. Enter inspectaehrb in the order payment page "Promo/Redemption" space.
The Illustrated Home illustrates construction details and building components, a reference for owners & inspectors. Special Offer: For a 5% discount on any number of copies of the Illustrated Home purchased as a single order Enter INSPECTAILL in the order payment page "Promo/Redemption" space.
The Horizon Software System manages business operations,scheduling, & inspection report writing using Carson Dunlop's knowledge base & color images. The Horizon system runs on always-available cloud-based software for office computers, laptops, tablets, iPad, Android, & other smartphones
Wikipedia provided background information about some topics discussed at this website provided this citation is also found in the same article along with a " retrieved on" date. NOTE: because Wikipedia entries are fluid and can be amended in real time, we cite the retrieval date of Wikipedia citations and we do not assert that the information found there is necessarily authoritative.
Books & Articles on Building & Environmental Inspection, Testing, Diagnosis, & Repair
The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 25th Ed., 2012, is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume. Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. Enter INSPECTAHRB in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
Or choose the The Home Reference eBook for PCs, Macs, Kindle, iPad, iPhone, or Android Smart Phones. Special Offer: For a 5% discount on any number of copies of the Home Reference eBook purchased as a single order. Enter INSPECTAEHRB in the order payment page "Promo/Redemption" space.