Cellulose is recycled newsprint treated with a fire retardant.
Adding extra insulation to attic walls.
As you keep adding more and more insulation you keep reducing the heat flow through the wall more and more.
Inspect the exterior walls by using an electrical outlet.
Choose fiberglass insulation batting.
Add weatherstripping around the perimeter and a sweep to the door of a walk up attic.
The r value of the batt measures the thermal resistance so the higher the r value the more effectively.
Pull out a small amount of insulation if needed to help.
With boric acid added for fire resistance shredded recycled telephone books tax forms and newspapers all contribute to making safe cellulose insulation blown in cellulose is injected into the wall cavities by a series of holes drilled into either the inside or outside of the walls.
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.
Attic hatch or door.
3 have a friend add material to the hopper.
Blowing in attic cellulose is conceivably a do it yourself job.
Fiberglass is just that thin fibers of glass that trap air.
When adding additional insulation you do not have to use the same type of insulation that currently exists in your attic.
There are various grades of insulating batting for different locations in the house so you ll need a different insulation for interior exterior attic or basement walls.
If you use fiberglass over loose fill make sure the fiberglass batt has no paper or foil backing.
Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120.
Blown in insulation overview.
The pros charge 1 500 to 2 000 to do a 1 200 sq ft.
The grade of batting will vary depending on the wall that you re insulating.
Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.
Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used.
You can add loose fill on top of fiberglass batts or blankets and vice versa.
You should be able to see if there is insulation in the wall.
Remove the outlet cover and shine a flashlight into the crack around the outlet box.
Affix rigid foam insulation to the attic side of the hatch or door.
Block all vents in the attic floor with baffles making sure to extend the baffles at least four inches above the planned thickness of your insulation.
How much does attic insulation cost.
Pull down stair or ladder.
Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation.
You can do it yourself for about 500.
Turn off the power to the outlet.
If you need to add insulation in your attic save big by blowing in cellulose insulation yourself.
