Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120.
How to add batt insulation to attic.
Add the right kind of insulation.
Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation.
The vapor retarder on top of or between layers of insulation can trap moisture.
To install fiberglass batts over existing insulation lay the batts perpendicular to the joists so they do not compress the insulation below.
Add weatherstripping around the perimeter and a sweep to the door of a walk up attic.
Attic hatch or door.
Multiply the number of inches of insulation by the r value per inch.
According to the u s.
You can add loose fill on top of fiberglass batts or blankets and vice.
When adding additional insulation you do not have to use the same type of insulation that currently exists in your attic.
The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.
Department of energy fibgerglass batts have an r value of 3 2 per inch while loose fill fiberglass.
Pull down stair or ladder.