Attic Insulation Cellulose R Value

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Attic insulation cellulose r value.

Use this insulation savings calculator to measure the financial impact of increasing your insulation performance. How much is enough. 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.

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. Cellulose insulation has a baseline r value of 3 8 per inch. Click the button to calculate the approximate r value for this job. Achieving greater r values in exterior walls.

Square feet of house or area to be insulated current and desired r value for insulation and type and cost of your energy. There are many ways to retrofit a home with fiberglass and. 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.

The r value of loose fill cellulose is r 3 2 3 8 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. Your home s age if your home is more than 10 year old you likely need more insulation. Recycled glass or sand that s melted and spun into fibers.

This calculator is to be used as an estimating tool only. The common denominator among varieties of insulation is the 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.

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. 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. As a benchmark one inch of solid wood has an r value of 1.