Cellulose Attic Insulation R Value

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Cellulose attic insulation r value.

Cellulose retains more of its r value through a wider range of temperatures compared to fiberglass. Square feet of house or area to be insulated current and desired r value for insulation and type and cost of your energy. Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics. Where you live different climates require different insulation r values.

Cellulose has an r value of 3 5 3 7 per inch where fiberglass has around 2 1 2 7 r per inch. Achieving greater r values in exterior walls. As a benchmark one inch of solid wood has an r value of 1. You can achieve better thermal performance in your attic by adding an additional layer of insulation.

The higher the r value the better the thermal performance of the insulation. You will need a higher r value of insulation if you live in the northeast than if you live in southern california. Your home s age if your home is more than 10 year old you likely need more insulation. Use this calculator to estimate r value for your space.

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. The common denominator among varieties of insulation is the r value. The r value of loose fill cellulose is r 3 2 3 8 per inch. 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.

When adding insulation r value is one of the first considerations. R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another. Once the current r value is estimated check the recommended r value based on the region of the country. With blown in cellulose insulation that would require insulation to a depth of 10 inches.

There are many ways to retrofit a home with fiberglass and. Cellulose insulation comes from recycled newsprint where waste paper from nationwide landfills is taken through several industrial chemical processes to make it suitable for home insulation use. Use this insulation savings calculator to measure the financial impact of increasing your insulation performance.