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Type II, Class C. Foil-faced Thermal Batt Insulation complies with ASTM C 665, Type III, Class B and C. 1 Higher R-values mean greater insulating power. Find out why in the seller's fact sheet on R-values.
That means that the insulation R-value chart you will find below is basically an insulation thickness chart, based on 1 inch of insulation. Example: Fiberglass batt has a typical R-value of R-3.7 per inch of thickness.
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.
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.
Find your zone on the map and then use the above insulation R-value chart to determine the level of insulation you need to properly insulate your attic, walls, floors and crawlspaces. These R-values are a sum, meaning this should be the total R-value once you add up the entire depth of insulation.
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.
The following R-value chart provides typical roof insulation R-values, other building insulation R-values, and the R-value of roofing materials like shingles and single-ply membranes (roof covering materials), as well as a few other building materials. RSI values are given as well.
EFFECTIVE R-VALUES FOR BATT INSULATION* . Measure the insulation thickness. Determine the condition of the installation using the following criteria: Good—No gaps or other imperfections. Fair—Gaps over 2.5% of the insulated area. (This equals Ƙ. inch space along a 14.5 inch batt.) Poor—Gaps over 5% of the insulated area.
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.
Our calculator helps you measure what r value for exterior walls you may be looking for, as well as for different applications. i.e. ceiling insulation R value, R value for walls and more. Click to launch the Effective R-Value Calculator.