To give you a quick example if you blow in 18 of insulation into your attic with an r value of 3 0 per inch you ve got an effective r value of 3 x 18 54.
Mn attic insulation r value.
In uninsulated attic spaces the target r value is r49 to r60 r38 to r49 for attics with some insulation.
Blown in cellulose insulation can carry an r value of 3 2 3 8 per inch of thickness.
To determine the present r value of your attic insulation have an energy assessment.
Attic insulation is popular as an energy saving project because it is usually the highest area where energy can be lost making it is one of the most cost effective installations you can do around your home and also because it is generally easy to access to resolve the problem and update the attic insulation.
The recommended r value for attic insulation in our area of the country minnesota is 49.
Insulation level are specified by r value.
In uninsulated attic spaces the target r value is r49 to r60 r38 to r49 for attics with some insulation.
Achieving greater r values in exterior walls.
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.
R value is a measure of insulation s ability to resist heat traveling through it.
Having the correct amount of attic insulation can help you maintain a comfortable temperature throughout your home and help save money on your energy bills plus prevent major issues like ice dams in the winter.
Increasing attic insulation to an r 50 can provide a good barrier to heat loss.
If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs.
Our team can assess your space and help you determine the right solution for your attic.
Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value.
The higher the r value the better the thermal performance of the insulation.
You can achieve better thermal performance in your attic by adding an additional layer of insulation.
Read more about insulating your attic on the energy star website.
The table below shows what levels of insulation are cost effective for different climates and.
Many utility companies offer incentives on larger projects furnace replacement attic insulation new refrigerator by giving you a discount on energy bills or sending you a rebate check when the work is completed.
For floors the ideal r value is r25 to r30.
Of course it s important to talk to your insulation company about specifics.
Recommended home insulation r values.
You can also measure the height of the insulation and multiply times the r value per inch of the ma terial that is in place 2 5 to 4 0 per inch on average.
