A professional contractor or existing energy codes will provide the right r values for you depending on your home s climates.
Attic insulation cellulose r value.
By today s standards most homes built more than 10 years ago can be considered under insulated.
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.
There are many ways to retrofit a home with fiberglass and.
You can achieve better thermal performance in your attic by adding an additional layer of insulation.
R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another.
When installing cellulose in your home the highest r value or installation depth is not necessarily the best.
Your home s age if your home is more than 10 year old you likely need more insulation.
Enter your data into the fields where indicated.
Achieving greater r values in exterior walls.
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.
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.
The higher the r value the better the thermal performance of the insulation.
The common denominator among varieties of insulation is the r value.
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.
This calculator is to be used as an estimating tool only.
Input depth of existing blown in insulation in inches.
How much is enough.
Cellulose insulation has a baseline r value of 3 8 per inch.
Click the button to calculate the approximate r value for this job.
Square feet of house or area to be insulated current and desired r value for insulation and type and cost of your energy.
Recycled glass or sand that s melted and spun into fibers.
Where you live different climates require different insulation r values.