R Value For Attic Insulation Blown In

Your home s age if your home is more than 10 year old you likely need more insulation.
R value for attic insulation blown in. Loose fill fiberglass has an r value of r 2 2 to 2 7 per inch3. R value is a measure of insulation s ability to resist heat traveling through it. This calculator is to be used as an estimating tool only. Where you live different climates require different insulation r values.
For example if your attic already has fiberglass insulation blankets installed you can improve its r value by installing blown in cellulose insulation on top of the blankets. Insulation level are specified by r value. The higher the r value the better the thermal performance of the insulation. Insulation depth depending on your climate energy codes require varying r values for ceiling insulation.
R value measures how well certain building insulation materials can resist heat. The higher the r value the greater the insulation performance. When determining how much insulation you need don t guesstimate calculate. The r value of loose fill cellulose is r 3 2 to 3 8 per inch2.
The r values of both insulations will accumulate. Achieving the desired r value depends on both the depth of the insulation and its density. There are many ways to retrofit a home with fiberglass and. Know exactly how much you need with our project calculators.
Input depth of existing blown in insulation in inches. You will need a higher r value of insulation if you live in the northeast than if you live in southern california.