Attic Insulation Material Ratings

Inspecting your attic insulation.

Attic insulation material ratings.

Insulation materials run the gamut from bulky fiber materials such as fiberglass rock and slag wool cellulose and natural fibers to rigid foam boards to sleek foils. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. R values vary based on the type thickness and density of the material being used. Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live.

You ll need about 12 inches of insulation material. Square footage of your attic. Insulation our building science makes insulation br smarter. Gary ombler getty images.

Insulation with a higher r value will perform better than insulation with a lower rating. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. The most effective places to add insulation to older homes are exterior walls attics basements and crawl spaces. Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary.

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. R value is a measure of insulation s ability to resist heat traveling through it. The table below shows what levels of insulation are cost effective for different climates and locations in the home. Here are the most popular options for attic insulation along with a ballpark figure on pricing.

Contractor or insulation installer s fee. The higher the r value the better the thermal performance of the insulation. Its expert engineering lets you create the most comfortable environment without compromising your design. Rigid foam boards trap air or another gas to resist conductive heat flow.

Rock wool generally costs more than fiberglass insulation. From schools to businesses to family homes our insulation works everywhere. Type and material of your insulation. The main factors that impact the cost are.

According to home advisor insulating your attic can cost between 1700 to 2100. Insulation level are specified by r value.