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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).
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 table below shows what levels of insulation are cost-effective for different climates and locations in the home.
R-value chart gives R-values for commercial and residential insulation and roofing products. Use this table to calculate roof R-value or RSI value.
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 insulation and a higher number represents more effective insulation. R-values are additive.
Learn all about insulation R-values and how they help keep your home cozy and save energy. Find everything you need to know with these insulation R-value charts.
This chart shows the approximate R-value per inch of various insulating materials but does not take into account any air leakage that can dramatically affect overall performance. Almost any type of insulation can improve your home’s performance.
These tables give R-values of all sorts of materials, in alphabetical order with direct links to some popular insulating materials.
Typical recommendations for exterior walls are R-13 to R-23, while R-30, R-38 and R-49 are common for ceilings and attic spaces. Use the JM insulation calculator to determine the recommended R-value for your project, as well as how much insulation you’ll need.
evaluate your house’s current R-value and recommend whether additional R-value is needed and appropriate types of insulation. The table opposite suggests R-values by zone as indicated in the map of the United States. It also suggests R-values when adding insulation to uninsulated or under-insulated attics, crawl spaces, and walls. Further ...
R-values for rigid insulation vary from R-3.85 to R-6.8 per inch of thickness. Polyiso has the highest R-value, followed by XPS and EPS. The key to all rigid insulation high R-values are small air pockets that exhibit high thermal resistivity properties: Small air pockets visible in Styrofoam.