Attic Insulation Depth

Contractor grade 30 lb.

Attic insulation depth.

The attic is the easiest place to add insulation to improve your comfort and the energy efficiency of your home. Insulation fibers are packaged in bags and blown in place to the desired depth and density using special machinery you can rent from a home center. Calculate additional insulation needed. Input depth of existing blown in insulation in inches.

Click the button to calculate the approximate r value for this job. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. Measure the depth of your current insulation. It works best for.

R 38 is the industry standard and the minimum thickness for r 38 is 12 inches. For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed your attic to reach r 30 if you live in zones 2 or 3. 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. Bag of all borate insulation is ideal for professional contractors that offer blow in attic sidewall and floor applications.

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. If your current insulation is only 5 inches deep you ll need to add seven inches of insulation to achieve the 12 inch r 38 rating. This calculator is to be used as an estimating tool only. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

For loose fill cellulose this translates to a total depth ranging from 8 inches. Bag of all borate contractor grade 30 lb. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Insulation level are specified by r value.

Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended. Shop insulation accessories. Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary.

The higher the r value the better the thermal performance of the insulation. Please enter depth in inches please enter depth in inches. R value is a measure of insulation s ability to resist heat traveling through it.