How Deep Should Blown Insulation Be In Attic R49

If you need to add insulation in your attic save big by blowing in cellulose insulation yourself.

How deep should blown insulation be in attic r49. You can do it yourself for about 500. Existing 3 4 inches of insulation. 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. How much does attic insulation cost.

Attic insulation is a key to saving energy during the heating season. Recommended insulation levels for retrofitting existing wood framed buildings. How deep to put blown in 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.

Blown in insulation overview. You d need a thickness of. 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. 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. 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. As a homeowner you will enjoy a lifetime of comfort and savings from america s most popular insulation. Add insulation to attic.

The pros charge 1 500 to 2 000 to do a 1 200 sq ft. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Inspecting your attic insulation. Click the button to calculate the approximate r value for this job.

Fortunately attic insulation can be upgraded simply by adding more to achieve the recommended. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of 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.