Add insulation to attic.
Attic insulation material ratings.
In particularly cold climates you might go up to r 60.
Let s say the insulation you ve selected has an r value of three per inch.
Inspecting your attic insulation.
Multiply the length times the width to determine the square footage of the space.
Most homes have some old or existing attic insulation already in their attic.
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.
From schools to businesses to family homes our insulation works everywhere.
Measure the area needing insulation.
Existing 3 4 inches of insulation.
Add insulation to 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.
Existing 3 4 inches of insulation.
Square footage of your attic.
Measure the length and width of the area you need to insulate.
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.
In general an attic s r value should be between r 30 and r 49.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Contractor or insulation installer s fee.
Cellulose a fiber insulation material with a high recycled content is blown into a home attic.
Recommended insulation levels for retrofitting existing wood framed buildings.
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.
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.
The main factors that impact the cost are.
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.
According to home advisor insulating your attic can cost between 1700 to 2100.
