Iowa Attic Insulation R Value

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.

Iowa attic insulation r value.

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. Where you live different climates require different insulation r values. Cedar rapids ia.

Recommended insulation levels for retrofitting existing wood framed buildings. There are many ways to retrofit a home with fiberglass and. R value is a measure of insulation s ability to resist heat flow. Recommended r value for iowa is r 49 which in about 15 to 18 of insulation depending on type of insulation.

Add insulation to attic. If your home has less than 12 of insulation in your attic then consider adding more attic insulation. R value measures how well certain building insulation materials can resist heat. Know exactly how much you need with our project calculators.

Any amount higher brings little additional benefits. Most home codes recommend a range of r 45 to r 60. Your home s age if your home is more than 10 year old you likely need more insulation. The higher the r value the better the thermal performance of the insulation.

Having a properly insulated attic will keep you cooler during the summer and warmer during the winter. The higher the r value the greater the insulation performance. When determining how much insulation you need don t guesstimate calculate. Also helped me with my rebate form for midamerican energy.

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. Add the right kind of insulation. Existing 3 4 inches of insulation. 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. You will need a higher r value of insulation if you live in the northeast than if you live in southern california. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. As a benchmark one inch of solid wood has an r value of 1.

I am 100 satisfied. Determining the r value of the insulation you currently have is the first step. Make sure you use unfaced fiber glass or mineral wool insulation when adding to existing insulation. This likely means adding an r 19 to r 30 layer of insulation to what you already have.