How Deep Should Blown Insulation Be In Attic R49

Fortunately attic insulation can be upgraded simply by adding more to achieve the recommended.

How deep should blown insulation be in attic r49.

As a homeowner you will enjoy a lifetime of comfort and savings from america s most popular insulation. A poorly insulated attic lets heat escape through the roof wasting energy used to warm. You d need a thickness of. 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.

Add insulation to attic. You can do it yourself for about 500. 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. For loose fill cellulose this translates to a total depth ranging from 8 inches up to 16 inches.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. 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. How much does attic insulation cost. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself.

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. How deep to put blown in insulation. The pros charge 1 500 to 2 000 to do a 1 200 sq ft.

Inspecting your attic insulation. This calculator is to be used as an estimating tool only. Blowing attic insulation isn t hard but it s dusty sweaty work. Click the button to calculate the approximate r value for this job.

Existing 3 4 inches of insulation. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Input depth of existing blown in insulation in inches.