Iowa Attic Insulation R Value

There are many ways to retrofit a home with fiberglass and.

Iowa attic insulation r value. Recommended insulation levels for retrofitting existing wood framed buildings. Existing 3 4 inches of insulation. Having a properly insulated attic will keep you cooler during the summer and warmer during the winter. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces.

The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. Recommended r value for iowa is r 49 which in about 15 to 18 of insulation depending on type of insulation. The higher the r value the greater the insulation performance. Add insulation to attic.

Make sure you use unfaced fiber glass or mineral wool insulation when adding to existing insulation. Attics in most areas of the country you should have an r 49 in the attic. Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. This likely means adding an r 19 to r 30 layer of insulation to what you already have.

You will need a higher r value of insulation if you live in the northeast than if you live in southern california. I am 100 satisfied. The common denominator among varieties of insulation is the r value. R value measures how well certain building insulation materials can resist heat.

R value is a measure of insulation s ability to resist heat flow. R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another. 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. I had insufficient insulation in my attic and they remedied the situation quickly and professionally by adding enough insulation to achieve r 49.

Excellent customer service on time friendly and knowledgeable. The higher the r value the better the thermal performance of the insulation. When determining how much insulation you need don t guesstimate calculate. As a benchmark one inch of solid wood has an r value of 1.

Where you live different climates require different insulation r values. Any amount higher brings little additional benefits. If your home has less than 12 of insulation in your attic then consider adding more attic insulation. Know exactly how much you need with our project calculators.

Your home s age if your home is more than 10 year old you likely need more insulation. Add the right kind of insulation. Determining the r value of the insulation you currently have is the first step. Also helped me with my rebate form for midamerican energy.