Grade AA Insulating Cement was made by Ruberoid "using a high grade of pure asbestos fiber together with suitable binding materials that had low conductivity," according to GAF's 1989 filing with the U.S. Environmental Protection Agency under the Asbestos Information Act, made for itself and The Ruberoid Co.1,2 The filing says it was designed to yield a hard, durable surface, and gives its temperature limit as 1200 degrees F.1,2 It includes formulas for the cement dated 1938 and 1945.1
Related: Grade A Insulating Cement.
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Asbestos claims
If you or a family member worked with or around Grade AA Insulating Cement (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.
The formulas
The 2 formulas documents give for Grade AA Insulating Cement (GAF), each with its ingredients and amounts exactly as printed. Amounts are by weight unless the document says otherwise; a total that doesn't come to 100 is the document's own.
Grade AA Insulating Cement · 1938
“The formula for this product is unknown except that in 1938 it consisted of:”
| Constituent | Amount |
|---|---|
| chrysotile | 65% |
| claya | 30% |
| Portland cement | 5% |
a. GAF knows nothing about this constituent, or about "CSW clay" (see formula b, below), except its name as shown.
Source: GAF Asbestos Information Act Submission (1989), p. 321
Grade AA Insulating Cement · 1945
“In 1945 it consisted of:”
| Constituent | Amount |
|---|---|
| chrysotile | 68.5% |
| CSW clay | 27.0% |
| Portland cement | 4.5% |
Source: GAF Asbestos Information Act Submission (1989), p. 321
What each document says
Every statement about Grade AA Insulating Cement (GAF) in the documents, in each document's own words.
GAF Asbestos Information Act Submission (1989)
Asbestos; Publication of Identifying Information (1990)
- Description: “a high grade of pure asbestos fiber together with suitable binding materials that had low conductivity ... designed to yield a hard, durable surface”, said by GAF Building Materials Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 92
- Temperature limit: “Its temperature limit was 1,200 °F”, said by GAF Building Materials Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 92
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
- GAF Asbestos Information Act Submission (October 6, 1989), p. 32.
- Asbestos; Publication of Identifying Information (February 13, 1990), p. 9.
Cite this page
“Grade AA Insulating Cement (GAF).” AsbestosClaims.Law Library. https://asbestosclaims.law/library/products/gaf-grade-aa-insulating-cement.
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