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Asbestos producing companies list:
This article lists U.S. (and other) companies who were major producers of asbestos or asbestos-containing products. There were thousands of products that contained asbestos, some made by comparatively small businesses.
Therefore no list of asbestos product producers is likely to be complete. But these major asbestos-product producing companies were responsible for the production of the majority of products used over the range of asbestos-containing products and materials.
This article series assists building building buyers, owners, attorneys, engineers, environmental investigators or inspectors who need to identify asbestos materials (or probable-asbestos) in buildings by simple visual inspection. We provide photographs of asbestos containing materials and descriptive text of asbestos insulation and other asbestos-containing products to permit identification of definite, probable, or possible asbestos materials in buildings.
The following is a complete list of companies who produced products that used or contained asbestos in one or more forms. Of course many of these companies made many products that did not-contain asbestos as well.
Armstrong ceiling tiles: According to Armstrong Corporation, those attorneys and some home inspectors are mistaken. Armstrong commented as follows:
Our mineral fibre tiles are made from a combination of the following naturally occurring, processed and recycled materials in varying proportions depending upon the tile type: mineral wool, clay, perlite, cellulose and starch mixed together in a water based process before being cured by heat.
They are then finished with a water based paint, or laminated scrim and paint, decorative facing. All these materials are environmentally safe and our factories comply with ISO 14001.
Asbestos, in any form, is not and never has been used in the manufacture of Armstrong ceiling tiles.
James Hardie International? See information about James Hardie fiber cement siding at ASBESTOS CEMENT ROOF & SIDING HISTORY where you'll read that Hardie entered the fiber cement business in the mid 1980's - after asbstos would have been discontinued from most fiber cement products. It is possible that there were older asbestos-cement products made by the company. 
National Gypsum Corporation, produced a wide range of asbestos-containing building products including:
Gold Bond Fire-Shield™ Plaster (1958-1970), Gold Bond Macoustic™ Plaster (1942-1947), Gold Bond Perfo-Lyte™ Acoustical Plaster (1955-1972),
and other Gold Bond Plaster products including Gold Bond Patching Plaster™, Spackling Plaster, and Wood-Fibered Plaster. Also National Gypsum E-Z Soak, Gold Bond Asbestone, Gold Bond Asbestos Cement board products, Gold Bond Humiguard™ asbestos panels, Gold Bond joint compound or spackling compound, Gold Bond textured paints, National Gypsum's Gypsolite™, Gold Bond siding products, Gold-bond non-perforated asbestos panels, Gold Bond Plasticrylic™ wallboard and panels, Gold Bond Sprayolite™, Gold Bond Nator.
Asbestos was thus used in many National Gypsum Gold Bond™ gypsum board products produced between 1950 and 1970. Asbestos was not used in National Gypsum gypsum-board products after that year.
Below is a list of National Gypsum Products believed to contain asbestos. National Gypsum's wallboard was produced as early as 1925 when the company was founded and extended at least into the 1970's along with other asbestos-containing products listed below.
Not all National Gypsum products and not all Gold Bond™ products necessarily contained asbestos. National Gypsum will certainly have produced products that did not contain asbestos, such as cellulose-based or wood-fiber-based insulating boards like those described at SHEATHING, FIBERBOARD.
Wood or other cellulose used to produce insulating board (IB) not an asbestos containing material.
However as we discuss further at SHEATHING, FIBERBOARD ASBESTOS CONTENTsome of those non-asbestos products may have been cross-contaminated with asbestos if they were made at a facility where asbestos was being processed.
The National Gypsum company declared bankruptcy in 1990 and emerged in 1993 when the National Gypsum Corporation Settlement Trust (NGC Trust) was funded to settle asbestos liability claims. Quite a few law firms solicit clients
who may be entitled to payments out of the NGC trust.
Craftco Cement Paint
Ceiling tiles, National Gypsumn Gold Bond
Gold Bond Asbestos Permaboard
Gold Bond Asbestos Cement Board
Gold Bond Abestone
Gold Bond E-Z Spray Texture
Gold Bond Exterior Stucco
Gold Bond Siding
Gold Bond Plasticrylic Panels
Gold Bond Non-perforated Asbestos Panels
Gold Bond Humiguard Asbestos Panels
Gold Bond Plasters (Gypsolite, E-Z Soak, All Purpose Joint Compound, etc.)
Gold Bond Sprayolite
Gold Bond Texture Paint (spray fire-resistant coating)
Ceiling Tiles, Owens Corning Fiberglass - [Really? This claim appears at some mesothelioma lawsuit websites; patent research or other citations are needed] Also see MESOTHELIOMA doctors, organizations, treatment resources, legal advice.
[Note: some mesothelioma websites cite Owens Corning as a producer of asbestos-containing floor tiles and "floor coverings" up to 1971; we have not yet found specific product names, descriptions, ingredient lists for this manufacture.
Other producers of adhesive-vinyl flooring made products containing asbestos that may have been sold into the early 1980's]
Flooring: Fibreboard corporation acquired by OC in 1997, produced flooring, industrial insulation (containing asbestos), and possibly other asbestos-containing products. The company also produced vinyl siding.
Gaskets, packings, used in automotive, engine, & other applications, containing asbestos 1928 - 1948 (or later, proably into 1970's) (est) [patent research citation needed]
Pipe Insulation (ordered by beginning year of production)
Sears & Roebuck: Sears vinyl asbestos floor tiles, and other products described below.
Sears & Roebuck Products that Did Contain Asbestos
Research for products sold by Sears & Roebuck that contained asbestos, incuding the use of asbestos in patent disclosures assigned to Sears Roebuck & Co. does find asbestos containg products as would be expected of any company selling such an enormous range of products over many decades.
A few examples such as oil ranges, warm air furnaces, and even lightning system components are listed below:
Hair dryers containing asbestos were sold by many companies including Clairol, COnair, General Electric, Gillette, J.C. Penny, Montgomery Ward, Norelco, Shick, Sears Roebuck & Co., Sunbeam
Hedengren, Ossiaii A. "Ignition device for oil ranges." U.S. Patent 2,248,991, issued July 15, 1941. Original Assignee, Sears
Excerpt: The-bumers are provided with asbestos or other suitable kindlers
Mumma, George E., "Warm air furnace." U.S. Patent 2,408,991, issued October 8, 1946. Original Assignee: Sears Roebuck & Co.,
Excerpt: Each flared section 30 is provided on each side thereof with openings which are closed by means of doors 4!), suitable packing, such as asbestos rope, being provided around the edges of the doors.
Rudolph, Hoffman. "Lighting-ring." U.S. Patent 1,367,392, issued February 1, 1921. Assignor to Sears Roebuck & Co.,
While the body 1 of the ring may be composed of any suitable material, it is herein shown as formed of concentric layers 2 of asbestos paper, the layers being held together in the form of a ring in any suitable manner, as by means of wire staples 3. rIhe upper edge of the body 1' is covered with suitable material, as, for example', a strip 4 of asbestos paper folded along its longitudinal Patented Aug'. I, 1916.
Usher, Peter P., and Eugene J. Gavaletz. "High temperature seals. Knitted wire mesh exhaust coupling seal with refractory metallic oxide impregnant " U.S. Patent 4,462,603, issued July 31, 1984.
This patent includes description of use of Sears Best Weatherbeater House and Trim Acrylic Latex Paint, Exterior Satin Finishg, by Sears Roebuck & Co., as an impregnating solution used in forming a seal discussed in this patent. [NOTE: This patent is not asserting that there was asbestos in Sears Weatherbeater paint - Ed. ]
Excerpt: Other seals for these applications employ a laminate construction including asbestos and perforated sheet steel. Still other conventional seals may include impregnated asbestos yarn knitted within a wire mesh, these materials being pressed together to form the seal. In some instances, no seal is used at all, the flanges themselves effecting a sealed joint when connected together.
USG Adhesives and adhesive coatings including USG Bondcrete, USG Red Top plaster products, USG Gypsum Cement plaster, USG Imperial Gypsum Woodfiber Plaster, USG Perf-A-Tape™ cement, USG Structolite plaster,
Asbestos-containing coatings or paints including USG Asbestos Fiber Covering (a commecial and residential roof coating) and Oriental Exterior Stucco Finsih Coat and USG boiler coating and USG pipe insulation and range boiler coating, USG Durabond joint compound, USG Imperial tape,
Note that while USG owns the Sheetrock™ trademark the use of that term is also widespread as a generic term for gypsum board or drywall. The image of a 1920's Sheetrock Ad shows the US Gypsum company's information. [Click to enlarge any image]
Try the search box below or CONTACT US by email if you cannot find the answer you need at InspectApedia.
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
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.
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?
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.
Ask a Question or Search InspectApedia
Questions & answers or comments about what building products and common in-building products, appliances, mechanical components were produced using asbestos materials.
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.
Asbestos, its Industrial Applications, D.V. Roasato, engineering consultant, Newton MA, Reinhold Publishing Co., NY, 1959, Library of Congress Catalog No. 59-12535. We are in process of re-publishing this interesting text. Excerpts & adaptations are found in InspectApedia.com articles on asbestos history, production & visual identification in and on buildings.
Asbestos Asbestos Information Links: Asbestos Detection, Testing, Recognition, Hazards, Field Photos, and Information Sources, including
health-related links such as legal services and information about mesothelioma and other cancers.
"Asbestos in Plastic Compositions", A.B. Cummins, Modern Plastics [un-dated, pre 1952]
"Asbestos in Your Home," Spokane County Air Pollution Control Authority, Spokane WA 509-477-4727 www.scapa.org provides a one-page image, a .pdf file drawing of a house warning of some possible sources of asbestos in the home. The sources are not ranked according to actual risk of releasing hazardous levels of airborne asbestos fibers and the list is useful but incomplete.
Chrysotile [asbestos] and Its Uses, Louis Perron, Minerals and Metals Sector, Canadian Minerals Yearbook, 2002, Natural Resources Canada, web search 03/01/2011, original source: http://www.nrcan-rncan.gc.ca/mms-smm/busi-indu/cmy-amc/content/2002/20.pdf
The US EPA provides a sample list of asbestos containing products epa.gov/earth1r6/6pd/asbestos/asbmatl.htm
Thanks to Susan Kimball, Argus Pacific Corp., Puget Sound, WA, for pointing out that some products are permitted to contain more than 1% asbestos fibers by current standards provided that the fibers are encapsulated in an appropriate binder. Argus Pacific, in Seattle, WA 98119, 206.285.3373, is an industrial hygiene firm who also provide OSHA and DOSH regulated training in Washington State, providing classes in asbestos, lead, mold, hazardous waste, emergency response, and other occupational health, safety, and professional development topics. -- September 2008.
Work Practice for Window Removal and Window Putty Patching
With Less Than Or Equal To 1% Asbestos Window Putty and Caulking" University of Washington, 2002 http://www.washington.edu/admin/asbestos/1putty.html
How do I Manage Asbestos in our House or Apartment Building?, Illinois Department of Environmental Conservation, provides this article at http://www.epa.state.il.us/small-business/asbestos-in-home/
Asbestos in buildings - employee notice, University of Washington dept. of Environmental Safety, http://www.ehs.washington.edu/ohsasbestos/index.shtm
Window putty to be exempted from asbestos removal by State of Maine - http://list.uvm.edu/cgi-bin/wa?A2=SAFETY;wYpdKg;20010307113643-0500A
EPA Region 6 identifies window putty as asbestos containing - http://www.epa.gov/earth1r6/6pd/asbestos/asbmatl.htm
June 1997 - Window Putty - OSHA case cites contractor for asbestos exposure during removal of window putty http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=NEWS_RELEASES&p_id=1091
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 IN YOUR HOME U.S. EPA, Exposure Evaluation Division, Office of Toxic Substances, Office of Pesticides and Toxic Substances, U.S. Environmental Protection Agency, Washington,D.C. 20460
Asbestos NESHAP ADEQUATELY WET ASBESTOS 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, ROSATO 1959, 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).
Fiberglass: Indoor Air Quality Investigations: Health Concerns About Airborne Fiberglass: Fiberglass in Indoor Air from HVAC ducts, and Building Insulation
Asbestos Information Links: Asbestos Detection, Testing, Recognition, Hazards, Field Photos, and Information Sources, including
health-related links such as legal services and information about mesothelioma and other cancers.
"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
Books & Articles on Building & Environmental Inspection, Testing, Diagnosis, & Repair
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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.
TECHNICAL REFERENCE GUIDE to manufacturer's model and serial number information for heating and cooling equipment, useful for determining the age of heating boilers, furnaces, water heaters is provided by Carson Dunlop, Associates, Toronto - Carson Dunlop Weldon & Associates Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on any number of copies of the Technical Reference Guide purchased as a single order. Just enter INSPECTATRG in the order payment page "Promo/Redemption" space.
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.
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