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R-Value

R-Value indicates the ability of a material or assembly to resist the conductive flow of heat; expressed as a number. Building materials and insulation are often specified and labeled by their resistance to heat transfer. The higher the "R," the higher the insulating value.

Whole Building Design Guide (WBDG) | Managing Enclosure Heat Flowsnon government site opens in new window

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42 Results : r value


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