The real key to blown in attic insulation is total coverage.
Attic insulation paper up or down.
Attic hatch or door.
Install foil or paper faced insulation with the facing side down.
I like fiberglass more expensive usually cleaner less dust up in the attic.
Cellulose paper mulch is cheaper and insulation companies will usually push it and they will make a higher profit installing it.
If the facing is up moisture will become trapped in your insulation and turn it into an ineffective mess.
Before installing determine the insulation material best suited for your home.
Pull down stair or ladder.
Affix rigid foam insulation to the attic side of the hatch or door.
If you use loose fill.
The paper facing should always face toward the inside of the home.
Regardless of whether fiberglass insulation is installed in a wall attic or crawlspace.
But they both will give you the same r value if you buy either one.
Facing is a thin layer of paper or plastic attached to one side of batting insulation which is sold in a roll.
Always have the paper toward the living area which in the case of an unfinished attic insulating attic floor would be paper face down.
The upshot here is that if you put the kraft paper on the wrong side and it gets wet it won t trap moisture.
Add weatherstripping around the perimeter and a sweep to the door of a walk up attic.
That s because the paper contains a layer of asphalt adhesive which prevents water vapor from passing through it.
Check pipes and vents.
Whether you choose faced or unfaced insulation for the attic depends on the.
Choose your insulation type.
Calculate how much you need.
Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120.
If you put it on the right side where the humidity is it s not much of a vapor retarder.