Calculating Attic Insulation R Value

Input length width and desired r value of the area to be insulated.

Calculating attic insulation r value.

Insulation savings calculator use this insulation savings calculator to measure the financial impact of increasing your insulation performance. The table below shows what levels of insulation are cost effective for different climates and. 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 in your attic to reach r 30 if you live in zones 2 or 3. Click the button to calculate the approximate r value for this job.

To find the r value of the existing insulation in your attic multiply the number of inches of insulation by the r value for your particular type. This calculator is to be used as an estimating tool only. Square feet of house or area to be insulated current and desired r value for insulation and type and cost of your energy. Go to the energy savers insulation page on the u s.

Wear a dust mask gloves and a long sleeved shirt when working with insulation. Input depth of existing blown in insulation in inches. Fiberglass and other insulation. Click the button to calculate the depth in inches and pounds of total insulation required for this job.

Inspecting your attic insulation. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Input length width and desired r value of the area to be insulated. Access the attic through the pull down ladder already installed in your home or with a stepladder placed so you can.

How to calculate existing r value in an attic 1. Department of energy website. Insulation calculation once you have determined which r value you need you can calculate how much insulation you need. Enter your data into the fields where indicated.

Insulation level are specified by r value. R value is a measure of insulation s ability to resist heat traveling through it. Refer to the project guide for more information on determining the right r value for your home. Click the button to calculate the depth in inches and pounds of total insulation required for this job.

This calculator is to be used as an estimating tool only. Recommended home insulation r values. For more detailed information on insulation in your part of the country and recommended insulation r value for attics walls and floors. Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live.