May 19, 2025 · What Is Insulation R-Value? Insulation ratings are measured in R-values per inch of thickness. An R-value tells you how well a type of insulation can keep heat from leaving or entering …

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.

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 material (e.g., for …

To help you choose adequate insulation, we have summarized the R-values of 51 most common insulation materials (check the insulation R-value chart below).

Nov 22, 2024 · What does R-value mean when it comes to insulation? If the temperatures throughout the home seem inconsistent, you feel drafts near the walls, floors, or ceilings, or if the walls and floors...

R-value quantifies how effectively insulation material can resist heat flow. A higher R-value indicates better insulation performance. Values typically range from R-13 to R-60, depending on the type of …

Mar 14, 2024 · For home improvement purposes, R-values range from about R10 for some flooring materials to R60 for dense attic insulation materials. But, this is where it gets complicated: The …

Mar 14, 2025 · Choosing the right R-value can keep your home warmer in winter, cooler in summer, and reduce HVAC costs. This guide breaks down what R-value means, how much insulation your home …

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.

Jul 17, 2025 · In this article, we’ll explore what R-value means, how it is measured, various materials’ typical R-values, and how to find the best insulation rating for your needs.