Square footage of your attic.
Attic insulation material ratings.
Existing 3 4 inches of insulation.
Add insulation to attic.
Decide on the type of insulation to use.
Multiply the length times the width to determine the square footage of the space.
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.
From schools to businesses to family homes our insulation works everywhere.
The main factors that impact the cost are.
Insulation our building science makes insulation br smarter.
The various performance levels r 19 r 30 and r 38 is all made from the same insulation material only the thickness of the insulation differs in order to achieve different r values and performance.
Cellulose a fiber insulation material with a high recycled content is blown into a home attic.
Its expert engineering lets you create the most comfortable environment without compromising your design.
Measure the area needing insulation.
Contractor or insulation installer s fee.
Recommended insulation levels for retrofitting existing wood framed buildings.
Measure the length and width of the area you need to insulate.
Inspecting your attic insulation.
Most homes have some old or existing attic insulation already in their attic.
Type and material of your insulation.
Cellulose insulation manufacturers association 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.
If your current insulation is only five inches deep you will need to add seven inches of insulation to achieve the 12 inch r 38 rating.
Cellulose insulation is calculated based on the depth of the blown in insulation.
Existing 3 4 inches of 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.
First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.
In general an attic s r value should be between r 30 and r 49.
Add insulation to attic.
Let s say the insulation you ve selected has an r value of three per inch.
