Iowa Attic Insulation R Value

Add insulation to attic.

Iowa attic insulation r value.

The higher the r value the greater the insulation performance. Where you live different climates require different insulation r values. Excellent customer service on time friendly and knowledgeable. Attics in most areas of the country you should have an r 49 in the attic.

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. R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another. There are many ways to retrofit a home with fiberglass and. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.

When determining how much insulation you need don t guesstimate calculate. Know exactly how much you need with our project calculators. R value is a measure of insulation s ability to resist heat flow. The common denominator among varieties of insulation is the r value.

Make sure you use unfaced fiber glass or mineral wool insulation when adding to existing insulation. The us department of energy recommends an r value the thermal resistance of the insulation material of 60 to maximize the benefit of attic insulation. Existing 3 4 inches of insulation. Any amount higher brings little additional benefits.

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. Most home codes recommend a range of r 45 to r 60. 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.

Cedar rapids ia. The higher the r value the better the thermal performance of the insulation. I had insufficient insulation in my attic and they remedied the situation quickly and professionally by adding enough insulation to achieve r 49. As a benchmark one inch of solid wood has an r value of 1.

Recommended r value for iowa is r 49 which in about 15 to 18 of insulation depending on type of insulation. This likely means adding an r 19 to r 30 layer of insulation to what you already have. Also helped me with my rebate form for midamerican energy. Recommended insulation levels for retrofitting existing wood framed buildings.

I am 100 satisfied. If your home has less than 12 of insulation in your attic then consider adding more attic insulation. You will need a higher r value of insulation if you live in the northeast than if you live in southern california. Add the right kind of insulation.