R-Value Calculator | ROCKWOOL
www.rockwool.com › tools › r-value-calculatorR-value is a measurement that rates how resistant a product is to heat flow, measuring the ability of heat to transfer from one side of an object to another. Our calculator helps you measure what r value for exterior walls you may be looking for, as well as for different applications. i.e. ceiling insulation R value, R value for walls and more.
Calculating the Total R-Value
watermark.abcb.gov.au › sites › defaultCalculating the total thermal resistance (Total R-Value) You can now calculate the total thermal resistance (Total R-Value). This is the sum of all the layers, the surface layers and any bridge layers (i.e. Layer 3). Total R-Value = 0.030 + 0.038 + 1.28 + 0.076 + 0.120 Total R-Value = 1.544 m2.K/W Further considerations