# What is the R-value of 6 inches of blown insulation?

## What is the R-value of 6 inches of blown insulation?

Cellulose ChartR-ValueMin ThicknessBags / 1000 Sq FtR4413.4”66.2R3811.6”55.5R309.3”42.7R196”24.8

## What is the R-value per inch of cellulose?

R-3.2 to 3.8 per inch2The 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. Achieving the desired R-value depends on both the depth of the insulation and its density.

## What is the R-value of 5 inches of cellulose insulation?

about 3.2 to 3.8 per inchCellulose is an alternative to blown-in fiberglass. It's a fiber made from around 80 to 85 percent recycled paper. Cellulose is denser than blown-in fiberglass, so it has a better R-value — about 3.2 to 3.8 per inch, however, it does settle and flatten over time, losing some of that insulating value.

## How many inches of cellulose is R38?

10-inchesCellulose has many advantages over fiberglass. Cellulose attains an R-38 rating with approximately 10-inches of thickness, whereas fiberglass needs be about 12-inches thick to achieve the same performance, this makes cellulose far more effective per inch.

## What is the R-value of 4 inches of insulation?

For areas with 3-4 inches of existing insulation, you will need an R-value of 38-49. For insulating flooring, you will need an R-value of 25-30.

## How thick should cellulose insulation be in attic?

The recommended level for most attics is to insulate to R-38 or about 10 to 14 inches, depending on insulation type.

## What is the depth of R-38 blown insulation?

To attain an R-value of R38, a depth or thickness of the blown-in insulation of 15,7″ is needed for fiberglass and 11,98″ for cellulose. Cellulose is seen as a more sustainable means of insulation, with the recycled paper being used as insulation.

## Does cellulose insulation lose R-value?

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. 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.

## What is the R-value of 8 inches of fiberglass insulation?

R-Value of Insulation by Type Fiberglass (batts): 2.9 – 3.8.

## How long does blown-in cellulose insulation last?

20 to 30 yearsBecause it is made primarily of recycled materials, however, cellulose insulation does degrade over time. The typical lifespan is 20 to 30 years, with degradation beginning as early as 15 years after installation. As with other types of insulation, severe weather or outside interference can reduce the lifespan.

## How many inches of blown-in cellulose insulation do I need?

With blown-in cellulose insulation, that would require insulation to a depth of 10 inches. If there is already insulation, measure the current depth and subtract to determine the amount needed to bring the attic to the recommended level for the desired R-Value.

## How deep should cellulose insulation be in attic?

The recommended level for most attics is to insulate to R-38 or about 10 to 14 inches, depending on insulation type.

## How long does blown in cellulose insulation last?

20 to 30 yearsBecause it is made primarily of recycled materials, however, cellulose insulation does degrade over time. The typical lifespan is 20 to 30 years, with degradation beginning as early as 15 years after installation. As with other types of insulation, severe weather or outside interference can reduce the lifespan.

## How many inches of cellulose are in an attic?

In temperate coastal areas such as Zone 3, attic insulation of at least R30 up to a maximum of R60 is recommended. For loose-fill cellulose, this translates to a total depth ranging from 8 inches up to 16 inches.

## How many inches of blown insulation should be in my attic?

R-Value is a measure of insulation's ability to resist heat flow. The higher the R-Value, the better the thermal performance of the insulation. The recommended level for most attics is to insulate to R-38 or about 10 to 14 inches, depending on insulation type.

## How many inches of insulation is recommended for attic?

R-Value is a measure of insulation's ability to resist heat flow. The higher the R-Value, the better the thermal performance of the insulation. The recommended level for most attics is to insulate to R-38 or about 10 to 14 inches, depending on insulation type.

## Which is better blown-in fiberglass or cellulose?

At 3.5 per inch of material, the R-value of blown-in cellulose is 23% better per inch than fiberglass batts! According to research done at the Oak Ridge National Lab, fiberglass loses up to 50% of its R-value in very cold conditions, making cellulose a better choice for homes in northern climates.

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