First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.
Attic insulation material ratings.
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.
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.
Square footage of your attic.
Rigid foam boards trap air or another gas to resist conductive heat flow.
Inspecting your attic insulation.
Insulation our building science makes insulation br smarter.
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.
The main factors that impact the cost are.
Insulation level are specified by r value.
From schools to businesses to family homes our insulation works everywhere.
Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary.
Type and material of your insulation.
Rock wool generally costs more than fiberglass insulation.
Insulation with a higher r value will perform better than insulation with a lower rating.
Gary ombler getty images.
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.
R values vary based on the type thickness and density of the material being used.
R value is a measure of insulation s ability to resist heat traveling through it.
The higher the r value the better the thermal performance of the insulation.
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.
Bulky materials resist conductive and to a lesser degree convective heat flow in a building cavity.
Its expert engineering lets you create the most comfortable environment without compromising your design.
You ll need about 12 inches of insulation material.
According to home advisor insulating your attic can cost between 1700 to 2100.
