The R-value is the building industry term [3] for thermal resistance "per unit area." [4] It is sometimes denoted RSI-value if the SI units are used. [5] An R-value can be given for a …

R-Value is a measure of insulation’s ability to resist heat traveling through it. The higher the R-Value the better the thermal performance of the insulation.

May 19, 2025 · An R-value tells you how well a type of insulation can keep heat from leaving or entering your home. R-value insulation ratings vary based on the type, thickness and density …

Feb 27, 2022 · In construction, the R-value is the measurement of a material's capacity to resist heat flow from one side to the other. In simple terms, R-values measure the effectiveness of …

improve your home’s energy efficiency with insulation R value chart and insulation thickness. Here are key insulation r values, R value per inch to determine what R value do you need for …

Nov 22, 2024 · The R-value of insulation is a measurement of how much heat resistance the material has per inch of depth, so even if the insulation R-value for one material is lower than it …

Understanding R-value and choosing the right insulation for your climate can help lower your energy costs and make your home more comfortable. Our guide explains the factors affecting …

An insulating material’s resistance to conductive heat flow is measured or rated in terms of its thermal resistance or R-value -- the higher the R-value, the greater the insulating effectiveness.

Jul 28, 2025 · Learn what R-value means, how it’s calculated, and why it matters when choosing insulation that improves comfort, efficiency, and long-term performance.

Jun 23, 2025 · The “R” in R-value stands for resistance to heat flow. Simply put, the higher the R-value – or the larger the number – the greater a product’s insulating power.