Johns Manville Advises Customers of Revised LTTR Values

Johns Manville is advising customers of revised LTTR, or Long-Term Thermal Resistance, values for its polyisocyanurate insulation product line through a packet of information detailing the updated specifications. JM also has modified its packaging to reflect LTTR values by both test methods. As an example, a 1-inch board label will now include information from LTTR-S770-03: 6.0 (the old test method) and LTTR-S770-09: 5.7 (the new test method). To learn more and access an informational booklet, visit www. jm.com and click on the LTTR banner.

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