Loose Fill Cellulose Insulation R Value

When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding insulation.

Loose fill cellulose insulation r value.

In laboratory testing the average r rating for cellulose insulation is between 3 2 and 3 8 per inch. 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 higher the r value the greater the insulating power. Achieving the desired r value depends on both the depth of the insulation and its density.

R means resistance to heat flow. This doesn t represent the whole picture of thermal performance. 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. Compare insulation r values before you buy.

Insulation depth depending on your climate energy codes require varying r values for ceiling insulation. This calculator is to be used as an estimating tool only. This is r value loose fill cellulose insulation read this before you buy what you should know about r values the chart shows the r value of this insulation. Input depth of existing blown in insulation in inches.

Loose fill fiberglass by comparison provides an r value of 2 2 to 2 7 per square inch. Metric r2 6 per 100 mm. 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. With loose fill cellulose insulation you can achieve an r value of 3 2 to 3 8 per square inch.

The thermal conductivity of loose fill cellulose is approximately 40 mw m k r value. Loose fill fiberglass has an r value of r 2 2 to 2 7 per inch3. Loose fill fiberglass by comparison provides an r value of 2 2 to 2 7 per square inch. There are other factors to consider.

This is higher than other common loose fill insulation such as fiberglass which averages. 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. The r value of loose fill cellulose is r 3 2 to 3 8 per inch2.