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PIMA's expanded program now includes third-party verification of thermal resistance values (R-values) for full thickness products independently selected from distribution locations.
Roofing contractors can visit the updated polyiso.org for information on building codes, applications and AIA CEU courses related to polyiso insulation products.
PIMA releases research report demonstrating that the R-value of polyiso roof insulation shows no significant variation within the average winter and summer temperature ranges across North America.
Johns Manville (JM) has announced that JM Corbond III® closed-cell spray polyurethane foam insulation now delivers an R-value of R-7 per inch, a change that translates to a 9-percent increase in thermal resistance compared to the previous R-6.4 per inch.
