Input depth of existing blown in insulation in inches.
Attic insulation cellulose r value.
By today s standards most homes built more than 10 years ago can be considered under insulated.
You can achieve better thermal performance in your attic by adding an additional layer of insulation.
Cellulose insulation has a baseline r value of 3 8 per inch.
There are many ways to retrofit a home with fiberglass and.
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You will need a higher r value of insulation if you live in the northeast than if you live in southern california.
A professional contractor or existing energy codes will provide the right r values for you depending on your home s climates.
The higher the r value the better the thermal performance of the insulation.
When installing cellulose in your home the highest r value or installation depth is not necessarily the best.
The common denominator among varieties of insulation is the r value.
Recycled glass or sand that s melted and spun into fibers.
Use this insulation savings calculator to measure the financial impact of increasing your insulation performance.
The r value of loose fill cellulose is r 3 2 3 8 per inch.
Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics.
How much is enough.
Where you live different climates require different insulation r values.
R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another.
Click the button to calculate the approximate r value for this job.
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.
Average ratings the r value for cellulose insulation in an attic depends on several factors including the size shape and construction of your attic typical weather conditions where you live any.
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.
This calculator is to be used as an estimating tool only.
Lighter in weight than cellulose or mineral wool but it settles more than those materials so you ve got to put in a thicker layer to get the protection you need.
Achieving greater r values in exterior walls.