Documents in our library describe Transitop (Johns-Manville) as “building material consisting of a thermal insulating board core and an asbestos-cement sheet on one or both faces of the core”.1 They give it as sold from 1943.1,2 Where the documents differ, each is listed below with its source.
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Pictures
How Transitop (Johns-Manville) looked: a label, photograph or catalog page from our library. Each picture has its own page and library number, so it can be cited on its own.
Asbestos claims
If you or a family member worked with or around Transitop (Johns-Manville) and later developed mesothelioma or another asbestos disease, a claim may be paid by the Manville Personal Injury Settlement Trust. Free case review.
What each document says
Every statement about Transitop (Johns-Manville) in the documents, in each document's own words.
USPTO trademark case files (Trademark Full Text XML Data, Annual Applications, 2025 edition)
- Sold from: “first used in commerce 1943-12-21”, said by JOHNS-MANVILLE CORPORATION, as recorded by U.S. Patent and Trademark Office1
- Description: “BUILDING MATERIAL CONSISTING OF A THERMAL INSULATING BOARD CORE AND AN ASBESTOS-CEMENT SHEET ON ONE OR BOTH FACES OF THE CORE”, said by JOHNS-MANVILLE CORPORATION, as recorded by U.S. Patent and Trademark Office1
Label: Transitop stenciled wrapper (Johns-Manville Corporation), Image
- Sold from: “Date of First Use in Commerce: December 21, 1943”, said by Johns-Manville Corporation, as recorded by U.S. Patent Office trademark file2
Sourcebook on Asbestos Diseases: Medical, Legal, and Engineering Aspects, Volume Two
- Description: “asbestos-cement board lamination of wood fiber core” (as of 1950s, 1969), p. 1203
Manville Fund's Responses to Plaintiffs' Interrogatories in Moore v. H.K. Porter (1990)
- Asbestos content: “asbestos containing”, p. 284
- Made at: “Waukegan Plant (1922 to 1985): Transitop” (at Waukegan) (the plant: Waukegan, Illinois), p. 284
Kind of product
We list Transitop (Johns-Manville) with asbestos-cement pipe, board and sheet, from how the documents describe it. That page explains how such products exposed workers.
Trades that worked with products like it: Carpenters and Construction Workers.
Other asbestos-cement pipe, board and sheet by Johns-Manville (119)
Flexboard · Thermobestos · Min-k · Asbestocel · Metal-on · Transite · Transite Acoustical Panel · Transite Core Plate · Transite Insulated Roof · Transite Panel · Transite Sewer Pipe · Transite-Korduct · Tuff-Link · Type A Asbestos Millboard · Type A Millboard · Veneered Marinite · Vitribestos · Vitro Fire Felt · Xxx Asbestos Millboard · Xxx Millboard · and 99 more on the company's page
Asbestos-cement pipe, board and sheet by other makers (264)
Careytemp (Philip Carey) · Unibestos (Union Asbestos & Rubber Co.) · Unibestos (Pittsburg Corning) · Sal-mo (Nicolet) · Careycel (Philip Carey) · Therm-O-Tec (National Gypsum) · Thermalux (U.S. Gypsum) · Thermo-board (Philip Carey) · Timbertex (Ruberoid) · Tip Top (Ambler Asbestos Shingle & Sheathing Company) · Top Notch (Lehon) · Trafford Tile (Keasbey & Mattison) · Tri-Tone (Philip Carey) · Triple A (Atlantic Asphalt & Asbestos) · Triple Aaa Hip & Ridge Shingles (Atlantic Asphalt & Asbestos) · Turnall "Colourgaze" (Atlas Asbestos) · Turnall (Turners Asbestos) · Turnall Granitone (Turners Asbestos) · Turnall Weatherall (Turners Asbestos Cement Co. Ltd. (Turner & Newall)) · Turnall Weatherall (Turners Asbestos Cement) · and 244 more: all asbestos-cement pipe, board and sheet
See also
- Johns-Manville: the company's history, documents, people, products and plants
- Johns-Manville on our products page: what the documents say about the company's asbestos products, with sources
References
- USPTO trademark case files (Trademark Full Text XML Data, Annual Applications, 2025 edition) (January 4, 1944). Not yet published in our library.
- Label: Transitop stenciled wrapper (Johns-Manville Corporation), Image.
- Sourcebook on Asbestos Diseases: Medical, Legal, and Engineering Aspects, Volume Two (1986), p. 120. Not yet published in our library.
- Manville Fund's Responses to Plaintiffs' Interrogatories in Moore v. H.K. Porter (February 15, 1990), p. 28.
Mentioned on this site
Cite this page
“Transitop (Johns-Manville).” AsbestosClaims.Law Library. https://asbestosclaims.law/library/products/johns-manville-transitop.
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This page is provided for general informational purposes and does not constitute legal advice. Every asbestos case turns on its own facts, exposure history, diagnosis, deadlines, available evidence, and applicable law. Reviewing this page does not create an attorney-client relationship. For advice about your specific situation, call 833-4-ASBESTOS for a free case review.