Cellulose Attic Insulation R Value

The choices can be difficult to sift but cellulose insulation passes as a strong contender.

Cellulose attic insulation r value.

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. Input depth of existing blown in insulation in inches. As a benchmark one inch of solid wood has an r value of 1. This calculator is to be used as an estimating tool only.

R value is an essential factor to consider when selecting an insulation material for your premises. Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics. With blown in cellulose insulation that would require insulation to a depth of 10 inches.

R value measures conductive resistance. They are sprayed stapled blown nailed or simply laid in place. When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding. The term used to define an insulation material s resistance to heat loss.

The higher the r value the better the thermal performance of the insulation. Your home s age if your home is more than 10 year old you likely need more 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.

It measures the ability of a material to impede the flow of heat along a continuous solid mass. Click the button to calculate the approximate r value for this job. Insulation materials come in many forms. Over time the r value of xps insulation can drop as some of the low conductivity gas escapes and air replaces it a phenomenon is known as thermal drift or ageing.

There are many ways to retrofit a home with fiberglass and. The common standard by which insulation is measured r value is the level of resistance to heat flow. Once the current r value is estimated check the recommended r value based on the region of the country. Most of your home s heat is lost through conduction where blown in cellulose insulation r value read more.

Achieving greater r values in exterior walls. You will need a higher r value of insulation if you live in the northeast than if you live in southern california. You can achieve better thermal performance in your attic by adding an additional layer of insulation. The thermal resistance or r value of polystyrene foam board depends on its density.