Blown In Cellulose Insulation R Value

Input depth of existing blown in insulation in inches. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. Click the button to calculate the approximate r value for this job.

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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.

Blown in cellulose insulation r value.

Most of your home s heat is lost through conduction where blown in cellulose insulation r value read more. The term used to define an insulation material s resistance to heat loss. Insulation depth depending on your climate energy codes require varying r values for ceiling insulation. Achieving the desired r value depends on both the depth of the insulation and its density.

Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. 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. Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics. 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.

As a benchmark one inch of solid wood has an r value of 1. 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. It measures the ability of a material to impede the flow of heat along a continuous solid mass.

This calculator is to be used as an estimating tool only. The r value of loose fill cellulose is r 3 2 to 3 8 per inch2. Loose fill fiberglass has an r value of r 2 2 to 2 7 per inch3.

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