Gypsum based roofing products

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Abstract
Johns Manville does not accept or approve the use of any gypsum-based board as a substrate for JM Guaranteed roofing systems with hot asphalt or torch application methods.

Date
5/2002

Author(s)
Johns Manville

Page(s)
1

Source
Johns Manville

Keyword(s)
Johns Manville bulletin; gypsum board

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