How To Add Extra Insulation In Attic

Multiply the number of inches of insulation by the r value per inch.

How to add extra insulation in attic.

The vapor retarder on top of or between layers of insulation can trap moisture. Add the right kind of insulation. Any new batt or roll insulation installed over existing insulation in the attic needs to be without a vapor retarder face. You can add loose fill on top of fiberglass batts or blankets and vice.

Blowing attic insulation isn t hard but it s dusty sweaty work. Faced insulation should not be placed on top of existing insulation in the attic. According to the u s. Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120.

An adequately insulated attic reduces your home s energy costs by keeping warm air in during the winter and hot air out during the summer. Inspecting and evaluating your insulation. When adding additional insulation you do not have to use the same type of insulation that currently exists in your attic. If you want more storage space in your attic you can add shelving or other configurations.

You can do it yourself for about 500. Add weatherstripping around the perimeter and a sweep to the door of a walk up attic. If you do have mold in the attic you ll need to have it treated and removed by a professional before you add insulation. In a cooling climate a good blanket of attic insulation helps keep the house cooler and reduces the load on air conditioning equipment.

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. To determine whether you should add insulation. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. The pros charge 1 500 to 2 000 to do a 1 200 sq ft.

How much does attic insulation cost. Check the attic walls and floors adjacent to an unheated space like a garage or basement. Pull down stair or ladder. Affix rigid foam insulation to the attic side of the hatch or door.

Attic hatch or door. Department of energy fibgerglass batts have an r value of 3 2 per inch while loose fill fiberglass. Thickness must not be used as the sole factor in determining the r value of loose fill insulation particularly for attic insulation.