Imperial was a pipe covering and block insulation listed under GAF's name.1 In its 1989 filing with the U.S. Environmental Protection Agency under the Asbestos Information Act, made for itself and The Ruberoid Co., GAF described how it was built up from asbestos paper: two plies of flat asbestos paper were passed through an indenting roll, which left a waffle-like pattern of closely spaced square indentations.2 For pipe covering, the paper was wound on a mandrel and covered with canvas; sheets and blocks were glued together with a fireproof glue such as silicate of soda.2 GAF gave it a temperature limit of 500 to 700 degrees F.2
The two sources date it differently. GAF's filing says Imperial insulation was made from at least 1936 to approximately 1960.2 An insurance company's 1981 list of asbestos products, compiled from other companies' answers in lawsuits, dates its manufacture from 1920 and adds the note "pure asbestos."1
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Asbestos claims
If you or a family member worked with or around Imperial (GAF) and later developed mesothelioma or another asbestos disease, a claim may be paid by the G-I Holdings (GAF) asbestos trust. Free case review.
What each document says
Every statement about Imperial (GAF) in the documents, in each document's own words.
The Travelers Insurance Company's Product Information Booklet for Its Asbestos Seminar (1980–1981)
GAF Asbestos Information Act Submission (1989)
- Made from: “manufactured from at least 1936”, p. 272
- Temperature limit: “a temperature limit of 500 degrees - 700 degrees F”, p. 272
- Made until: “to approximately 1960”, p. 272
- Description: “two plies of flat asbestos paper passed through an indenting roll (waffle-like square indentations); pipecovering wound on a mandrel and canvas-covered; sheets and blocks glued with a fireproof glue such as silicate of soda”, p. 272
Asbestos; Publication of Identifying Information (1990)
- Made from: “manufactured from at least 1936”, said by GAF Building Materials Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 83
- Made until: “to approximately 1960”, said by GAF Building Materials Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 83
- Temperature limit: “a temperature limit of 500° to 700 °F”, said by GAF Building Materials Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 83
- Form: “pipe covering; sheets and blocks”, said by GAF Building Materials Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 83
- Description: “two plies of flat asbestos paper which were passed through an indenting roll resulting in a waffle-like appearance”, said by GAF Building Materials Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 83
Asbestos Magazine, 1936, January 1936
- Description: “Asbestos Pipe Covering”, said by The Ruberoid Co., as recorded by Asbestos (magazine), "Trade Marks" column, p. 394
Sourcebook on Asbestos Diseases: Medical, Legal, and Engineering Aspects, Volume Two
- Description: “covering, roofing, lagging, block”, p. 855
Kind of product
We list Imperial (GAF) with pipe covering and block insulation and asbestos-cement pipe, board and sheet, from how the documents describe its form. Those pages explain how such products exposed workers.
Trades that worked with products like it: Insulators and Insulation Workers, Pipefitters and Plumbers, Carpenters and Construction Workers, Roofers.
Other pipe covering and block insulation by GAF (6)
Pipe covering and block insulation by other makers (270)
Thermobestos · Superex (Johns-Manville) · Careytemp (Philip Carey) · Kaylo (Owens-Corning) · Unibestos (Union Asbestos & Rubber Co.) · High Temperature Insulation (Johns-Manville) · Hightemp #12 (Philip Carey) · Hightemp #15 (Philip Carey) · HT (Forty-Eight Insulations) · Hy Temp (Keasbey & Mattison) · Hy-temp (Nicolet) · Hylo (Eagle-Picher) · Imperial Pipe Covering (Ruberoid) · Impervo (Philip Carey) · Indented (Johns-Manville) · Insulation Seal 820 (Philip Carey) · Insutape (Unarco) · Insutape (Union Asbestos & Rubber Co.) · Insutube (Unarco) · Johns-Manville Jm (Johns-Manville) · and 250 more: all pipe covering and block insulation
Other asbestos-cement pipe, board and sheet by GAF (19)
Watcocell · Air Cell · Color-tex · Panelstone · Sponge Felt · Eternit · Stratalite · American Thatch · Clipfast · Dura Shake · Dura-Color · Duracolor · Duroc · Dutch Lap · Eternit Stonewall · Panelbestos · Stoneglow · Stonewall Board · Vanguard
Asbestos-cement pipe, board and sheet by other makers (364)
Flexboard (Johns-Manville) · Thermobestos · Careytemp (Philip Carey) · Min-k (Johns-Manville) · Unibestos (Union Asbestos & Rubber Co.) · Homestead (Johns-Manville) · Honeycomb (Nicolet) · Houservice (O'Neill Lumber Co.) · Humigard (National Gypsum) · Hy-swell (Nicolet) · I-s (Owens-Corning) · If It'S Supradur It'S Supra-Durable! (Supradur) · Imperial Marinite (Johns-Manville) · Industal (Keasbey & Mattison) · Industrial (Keasbey & Mattison) · Industrial A-c Board (Philip Carey) · Italit (Eternit, Inc.) · K & M 103 (Keasbey & Mattison) · K & M 601 (Keasbey & Mattison) · K & M 801 (Keasbey & Mattison) · and 344 more: all asbestos-cement pipe, board and sheet
See also
- GAF: the company's history, documents, people, products and plants
- GAF on our products page: what the documents say about the company's asbestos products, with sources
References
- The Travelers Insurance Company's Product Information Booklet for Its Asbestos Seminar (1980–1981) (April 30, 1981), p. 5.
- GAF Asbestos Information Act Submission (October 6, 1989), p. 27.
- Asbestos; Publication of Identifying Information (February 13, 1990), p. 8.
- Asbestos Magazine, 1936, January 1936 (January 1, 1936), p. 39.
- Sourcebook on Asbestos Diseases: Medical, Legal, and Engineering Aspects, Volume Two (1986), p. 85. Not yet published in our library.
Cite this page
“Imperial (GAF).” AsbestosClaims.Law Library. https://asbestosclaims.law/library/products/gaf-imperial.
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