Attic Insulation Material Ratings

Bulky materials resist conductive and to a lesser degree convective heat flow in a building cavity.

Attic insulation material ratings.

R values vary based on the type thickness and density of the material being used. Rock wool generally costs more than fiberglass insulation. According to home advisor insulating your attic can cost between 1700 to 2100. Square footage of your attic.

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Insulation with a higher r value will perform better than insulation with a lower rating. Type and material of your insulation. The main factors that impact the cost are.

Insulation our building science makes insulation br smarter. The most effective places to add insulation to older homes are exterior walls attics basements and crawl spaces. Inspecting your attic insulation. Fiberglass insulation rated at r 15 to fit a standard 4 inch wall costs around 0 50 per square inch as of 2013 according to fine.

From schools to businesses to family homes our insulation works everywhere. The higher the r value the better the thermal performance of the insulation. Rigid foam boards trap air or another gas to resist conductive heat flow. Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary.

R value is a measure of insulation s ability to resist heat traveling through it. 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. Here are the most popular options for attic insulation along with a ballpark figure on pricing. Gary ombler getty images.

You ll need about 12 inches of insulation material. Contractor or insulation installer s fee. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. 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.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. Insulation level are specified by r value.