By far the easiest way to add insulation to a completed home with the walls and ceiling already closed up is to blow insulation into the attic.
How to add blow in attic insulation.
The vapor retarder on top of or between layers of insulation can trap moisture.
Raise the floor to create storage space.
Connect the hose to the insulation machine.
Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used.
Wear a long sleeve shirt gloves eye protection and a dust mask.
Make sure you use an unfaced batt one without a paper or foil layer so the insulation does not trap moisture in the ceiling.
The hole is then.
Have a friend add material to the hopper.
Fill your space with insulation.
In most older homes and even in some newer ones blowing extra insulation into your attic can help save you a lot of money on energy bills some estimates go as high as 20 percent per year as well as make your home a more comfortable place to live.
Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.
Move across the attic until you ve hit your desired height at every point.
Continue to fill the attic.
Then pivot in place and do the same thing to the other side.
Block all vents in the attic floor with baffles making sure to extend the baffles at least four inches above the.
Connect the hose to the blown in insulation machine.
Rent a loose fill insulation blower from a home improvement or hardware store.
For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6.
Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation.
Blow in insulation until the hopper is empty.
To install blown in insulation in existing walls holes are drilled at the top of each stud space usually on the exterior and material is blown in via a long flexible hose.