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Understanding R-value

Abstract
Thermal resistance, commonly referred to as R-value, is a measure used to report the thermal performances of building materials, products, systems and assemblies. In the roofing industry, R-value also is used as a basis for comparing insulation products. It is important you understand how R-value is derived and tested, as well as guidelines and regulations for reporting and product labeling R-values.
Date
2/2022
Author(s)
Mark Graham
Page(s)
22-23
Keyword(s)
Thermal: resistance; R-value; guidelines



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