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Description. Thermal Batts are fl exible, FIBERGLAS insulation, made in R-values from 11 to 38. Thermal Batts are available plain, or faced with either a kraft or foil vapor retarder. The product is manufactured in thicknesses from 31⁄2 " to 12".
In this 1st chart, we list R insulation values per inch for all 4 batt types. On top of that, we have also calculated the R-value for 2-inch, 4-inch, and 8-inch thick batts. Example: Fiberglass batts have R-2.9 to R-3.9 per inch insulation.
The chart below displays the compressed R-value of standard batt products installed across several nominal framing cavity depths. The data represented on the chart come from the majority of fiber glass insulation manufacturers. Cavities that have a depth greater than the labeled thickness will see no compression and therefore no reduction in R ...
16 lis 2022 · The thickness of R19 insulation ranges from 2.1 inches to 6.3 inches. It is the least for aerogel and most for fiberglass and Rockwool. The R 19 thickness needed for spray foam insulation is 5.2 inches. The following table lists how much insulation thickness is needed for each material to achieve R19.
A 2×6 wall can hold either R-13, R-15, R-19, or R-21 fiberglass batts. So, if you were to use batt insulation, the highest R-value for a 2×6 wall is R-21. This means that you are using a 6-inch batt with an average R-value of R-3.5 per inch of thickness.
What You Should Know About R-values. The chart shows the R-value of this insulation. R means resistance to heat flow. The higher the R-value, the greater the insulating power. Compare insulation R-values before you buy. There are other factors to consider.
In most code jurisdictions, 2x6’s can be spaced on 24-inch centers, rather than 16-inch centers used for 2x4’s. The advan tages of using 2x6 studs on 24-inch centers are: The thicker wall cavity provides room for R-19 or R-21 wall insulation.
