Topical Terminology > R Value
1 Definition
R Value
For R Value we have a term and definition in Construction.
R Value (Construction) 
A measure of insulation. A measure of a materials resistance to the passage of heat. The higher the R value, the more insulating "power" it has. For example, typical new home's walls are usually insulated with 4" of batt insulation with an R value of R-13, and a ceiling insulation of R-30.
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