Putting Extra Insulation In Attic

Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary.

Putting extra insulation in attic.

The pros charge 1 500 to 2 000 to do a 1 200 sq ft. How much does attic insulation cost. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. If you decide on mineral wool such as glass wool or rock wool you will need to put down a damp proof membrane.

How to add extra insulation to an attic. Most attics are insulated with blown in loose cellulose r 3 5 per inch blown in loose fiberglass r 2 5 per inch or fiberglass batts r 3 2 per inch. Cellulose is recycled newsprint treated with a fire. You can do it yourself for about 500.

In either case get an extra bag or roll you really don t want to run out when you re almost done putting it in. Multiply the number of inches of insulation by the r value per inch. If you would like to use the attic for storage it is best to cover the insulation with some sort of boarding such as oriented strand board such as. Thickness must not be used as the sole factor in determining the r value of loose fill insulation particularly for attic insulation.

In practical terms you can choose between mineral wool or insulation boards. In a cooling climate a good blanket of attic insulation helps keep the house cooler and reduces the load on air conditioning equipment. The number one prep step. Inspecting and evaluating your insulation.

The structural elements are usually exposed in these areas which makes it. Department of energy fibgerglass batts have an r value of 3 2 per inch while loose fill fiberglass. According to the u s. Gaps in the attic or between the lower floors and the attic will let heated or cooled air escape to the great unconditioned outdoors making any insulation you add essentially useless.

Check the attic walls and floors adjacent to an unheated space like a garage or basement.