How Deep Should Blown Insulation Be In Attic R49

This calculator is to be used as an estimating tool only.

How deep should blown insulation be in attic r49. Existing 3 4 inches of insulation. You d need a thickness of. Recommended insulation levels for retrofitting existing wood framed buildings. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

The pros charge 1 500 to 2 000 to do a 1 200 sq ft. Fortunately attic insulation can be upgraded simply by adding more to achieve the recommended. Blowing attic insulation isn t hard but it s dusty sweaty work. How much does attic insulation cost.

Blown in attic insulation at home comfort insulation we use both fiberglass and cellulose loose fill blown in attic insulation from top manufactures in the usa. Inspecting your attic insulation. A poorly insulated attic lets heat escape through the roof wasting energy used to warm. For loose fill cellulose this translates to a total depth ranging from 8 inches up to 16 inches.

As a homeowner you will enjoy a lifetime of comfort and savings from america s most popular insulation. Click the button to calculate the approximate r value for this job. Attic insulation is a key to saving energy during the heating season. Blown in insulation overview.

How deep to put blown in insulation. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. Add insulation to attic. For ceilings with an attic space above section 402 2 1 allows the reduction in r value for your zone from r 49 to r 38 wherever the full height of uncompressed r 38 insulation extends over the wall top plate at the eaves.

Input depth of existing blown in insulation in inches. 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. 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.