How Deep To Make Blow In Insulation In My Attic

To keep the blown in insulation from falling through the attic hatch opening make a 2x12 dam around the hatch perimeter.

How deep to make blow in insulation in my attic.

The attic is the easiest place to add insulation to improve your comfort and the energy efficiency of your home. Contractor grade 30 lb. Bag of all borate contractor grade 30 lb. Bag of all borate insulation is ideal for professional contractors that offer blow in attic sidewall and floor applications.

Your choice in insulation can make a real difference in cleanup and mitigation after a burst pipe or house fire. Find your zone on the map and then use the above insulation r value chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Your options for attic insulation range from radiant barriers to sheets of mineral wool but most homeowners stick with products made from cellulose or fiberglass. To get the target r value from the product you chose use the number of bags your calculations showed that you needed to insulate your attic never fewer.

This calculator is to be used as an estimating tool only. How deep to put blown in insulation. Inspecting your attic insulation. To make it easy to eyeball how level the material is as you blow it in screw depth guides to joists throughout the space.

Blown in spray foam batts and blankets. A poorly insulated attic lets heat escape through the roof wasting energy used to warm. In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is 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.

Then to really seal the attic access up tight says olson lay fiberglass batt insulation on the inside of the hatch or door and wrap it up tight like a christmas present photo 3. Input length width and desired r value of the area to be insulated. Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary. Click the button to calculate the depth in inches and pounds of total insulation required for this job.

Greenfiber cellulose insulation fills gaps and voids to create an energy saving thermal blanket that can lower heating and cooling costs by 25 and reduce sound power by 60. 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. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.