Mn Attic Insulation R Value

Recommended home insulation r values.

Mn attic insulation r value.

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. Walls air sealing an attic replacing a furnace or adding storm windows may cost considerably more. Other utilities offer free. 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. Of course it s important to talk to your insulation company about specifics. Increasing attic insulation to an r 50 can provide a good barrier to heat loss. 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 higher the r value the better the thermal performance of the insulation. Blown in cellulose insulation can carry an r value of 3 2 3 8 per inch of thickness. R value is a measure of insulation s ability to resist heat traveling through it. 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.

Achieving greater r values in exterior walls. 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. 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. For floors the ideal r value is r25 to r30.

In uninsulated attic spaces the target r value is r49 to r60 r38 to r49 for attics with some insulation. To determine the present r value of your attic insulation have an energy assessment. Read more about insulating your attic on the energy star website. Our team can assess your space and help you determine the right solution for your attic.

You can achieve better thermal performance in your attic by adding an additional layer of insulation. In uninsulated attic spaces the target r value is r49 to r60 r38 to r49 for attics with some insulation. 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. The higher the r value the better the thermal performance of the insulation.