Cellulose Attic Insulation R Value

Most of your home s heat is lost through conduction where blown in cellulose insulation r value read more.

Cellulose attic insulation r value.

Achieving greater r values in exterior walls. The thermal resistance or r value of polystyrene foam board depends on its density. The higher the r value the better the thermal performance of the insulation. There are many ways to retrofit a home with fiberglass and.

R value is an essential factor to consider when selecting an insulation material for your premises. With blown in cellulose insulation that would require insulation to a depth of 10 inches. You will need a higher r value of insulation if you live in the northeast than if you live in southern california. Once the current r value is estimated check the recommended r value based on the region of the country.

Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. 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. You can achieve better thermal performance in your attic by adding an additional layer of insulation. It measures the ability of a material to impede the flow of heat along a continuous solid mass.

Your home s age if your home is more than 10 year old you likely need more insulation. When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding. As a benchmark one inch of solid wood has an r value of 1. They are sprayed stapled blown nailed or simply laid in place.

So for example a home in kansas is recommended to have a minimum r38 for attic insulation. 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 air leaks and. Where you live different climates require different insulation r values. This calculator is to be used as an estimating tool only.

R value measures conductive resistance. 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 common standard by which insulation is measured r value is the level of resistance to heat flow. Input depth of existing blown in insulation in inches.

Polystyrene loose fill or bead insulation typically has a lower r value compared to the foam board. The choices can be difficult to sift but cellulose insulation passes as a strong contender. Click the button to calculate the approximate r value for this job. Insulation materials come in many forms.