Transcription of SBS Modified Bitumen Specifications - Johns Manville
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SBS Modified Bitumen Specifications - Johns Manville
3-77 SBS Modified Bitumen General This section provides application information, and outlines Specifications currently available from JM Roofing Systems for SBS (Styrene-Butadiene-Styrene) Modified Bitumen Roofing Membranes. They may be applied with hot asphalt or cold adhesive. Some of these Specifications also allow the use of heat welding. This same application information applies to Sections 3d, 3e, 3g and All general information contained in this section and in the current JM Commercial/Industrial Roofing Systems Manual shall be considered part of these Specifications are available for systems installed over insulation, nailable, non-nailable, and lightweight fill substrates. JM offers systems that can be installed using either hot asphalt, heat welding or cold application cements. For hot-applied, Modified Bitumen roofing system applications, JM-approved asphalt is required. JM-approved asphalts are thoroughly evaluated before they are accepted for use in any Modified Bitumen system.
SBS 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
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