Loose Fill Cellulose Insulation R Value

Insulation depth depending on your climate energy codes require varying r values for ceiling insulation.

Loose fill cellulose insulation r value.

R 49 rsi 8 63 15 381 13 5 342 9 12 5 1 163 79 9 86 1 802 8 8 13 1 2 76 8 82 7 r 60 rsi 10 5 18 3 464 3 16 5 417 9 10 0 926 100 3 107 9 2 261 11 04 10 3 1 97 1 104 6 application coverage chart fact sheet greenfiber product ins551ld loose fill cellulose insulation r value 75 f mean temperature minimo de espresor mm. This calculator is to be used as an estimating tool only. Loose fill fiberglass by comparison provides an r value of 2 2 to 2 7 per square inch. This doesn t represent the whole picture of thermal performance.

R means resistance to heat flow. Loose fill fiberglass has an r value of r 2 2 to 2 7 per inch3. However like other loose fill insulation it also has a tendency to settle over time reducing its r value and its ability to prevent air movement. When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding insulation.

The r value of loose fill cellulose is r 3 2 to 3 8 per inch2. Achieving the desired r value depends on both the depth of the insulation and its density. Compare insulation r values before you buy. As a loose fill insulation cellulose provides high insulating values represented by its higher r value and it creates a good barrier against air leaks and infiltration.

Imperial r3 8 per inch which is about the same as or slightly better than glass wool or rock wool. 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. For loose fill insulation each manufacturer must determine the r value of its product at settled density and create coverage charts showing the minimum settled thickness minimum weight per square foot and coverage area per bag for various total r values. Input depth of existing blown in insulation in inches.

The thermal conductivity of loose fill cellulose is approximately 40 mw m k r value. There are other factors to consider. Click the button to calculate the approximate r value for this job. Loose fill fiberglass by comparison provides an r value of 2 2 to 2 7 per square inch.

With loose fill cellulose insulation you can achieve an r value of 3 2 to 3 8 per square inch. In laboratory testing the average r rating for cellulose insulation is between 3 2 and 3 8 per inch. This is higher than other common loose fill insulation such as fiberglass which averages.