Blown In Cellulose Insulation R Value

Achieving the desired r value depends on both the depth of the insulation and its density. Click the button to calculate the approximate r value for this job. 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.

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It measures the ability of a material to impede the flow of heat along a continuous solid mass.

Blown in cellulose insulation r value.

Insulation depth depending on your climate energy codes require varying r values for ceiling insulation. Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. The r value of loose fill cellulose is r 3 2 to 3 8 per inch2. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and an inch of blown cellulose in an attic has an r value of 3 2 3 7.

Most of your home s heat is lost through conduction where blown in cellulose insulation r value read more. When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding. R value is an essential factor to consider when selecting an insulation material for your premises. Loose fill fiberglass has an r value of r 2 2 to 2 7 per inch3.

Input depth of existing blown in insulation in inches. Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics. As a benchmark one inch of solid wood has an r value of 1. Loose fill cellulose is relatively inexpensive yet still has an r value of about 3 5 per inch of thickness compared to fiberglass r value between r3 to r4 per inch.

The term used to define an insulation material s resistance to heat loss. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. This calculator is to be used as an estimating tool only.

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