You d need a thickness of.
R value for attic insulation blown in.
Achieving the desired r value depends on both the depth of the insulation and its density.
This calculator is to be used as an estimating tool only.
36 bags by tap pest control insulation.
Click the button to calculate the approximate r value for this job.
Depending on where you live it s recommended that attics have a minimum r value of r 30 in warm climates to r 60 in cold climates.
Input depth of existing blown in insulation in inches.
Loose fill fiberglass has an r value of r 2 2 to 2 7 per inch3.
You will need a higher r value of insulation if you live in the northeast than if you live in southern california.
Click the button to calculate the depth in inches and pounds of total insulation required for this job.
Input length width and desired r value of the area to be insulated.
Recommended insulation levels for retrofitting existing wood framed buildings.
Attic insulation for homes that are situated in cold climates homeowners need to ensure that they have a minimum of r 49 in their attics this is equivalent to about 16 inches of fibreglass insulation.
Existing 3 4 inches of insulation.
Your home s age if your home is more than 10 year old you likely need more 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.
This calculator is to be used as an estimating tool only.
If your home is in a warmer climate you require an r 38 or higher or about 12 more.
Not sold in stores.
The r value of loose fill cellulose is r 3 2 to 3 8 per inch2.
Add insulation to attic.
Tap epa registered pest control blown in insulation 30 lbs.
When blown into attics and wall spaces loose fill fiberglass offers an average r 2 5 thermal value per inch the higher the number the greater the insulating effect.