How Many Inches Of Insulation In The Attic Equals R45

The company claims that there is an alternate way to evaluate the insulation value provided by.

How many inches of insulation in the attic equals r45.

This calculator is to be used as an estimating tool only. As a benchmark one inch of solid wood has an r value of 1. This calculator is to be used as an estimating tool only. We don t see how an adequate r value can be provided in attics for our area.

For loose fill cellulose this translates to a total depth ranging from 8 inches. Input depth of existing blown in insulation in inches. In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended. Attic existing 3 4 inches of insulation uninsulated floor uninsulated wood frame wall insulated.

5 5 inches a nominal 6 inches is allowed in attics and crawlspaces. That is about 10 to 12 inches of blown insulation. That is about 13 to 15 inches of blown insulation. Click the button to calculate the depth in inches and pounds of total insulation required for this job.

What to do for your home. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. 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. The report gives an r value of 5 7 for the 1 6 inch thick test sample.

Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. 12 inches thick 13 0 20 to 0 40 0 02 30 0 60 to 1 00 0 03. Input length width and desired r value of the area to be insulated. Types of insulation insulation comes in many different forms some of which are listed below.