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SBS Modified Bitumen Specifications - Johns Manville
www.jm.comSBS Modified Bitumen Specifications 7.0 Roofing Bitumens 7.1 JM modified bitumen products are designed to be installed with hot asphalt or special cold application cements. Some others may be heat welded. PermaMop, coal tar pitch and coal tar asphalt are not permitted. 7.2 Asphalt can come from a variety of crude sources. Many of