Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.
Installing attic insulation over existing insulation.
Check the depth using a tape measure.
Choose your insulation type.
Install fiberglass batts over existing batt insulation.
Whether you live in a warm weather state as i do or in a cooler northern climate it s hard to stay comfortable and keep your energy bills in check if you don t have adequate insulation in the attic.
This method can be used in any climate though it historically has been most popular in colder climates.
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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.
Put on goggles and gloves to protect yourself while handling.
Faced insulation should not be placed on top of existing insulation in the attic.
To install fiberglass batts over existing insulation lay the batts perpendicular to the joists so they do not compress the insulation below.
Measure how much insulation you already have.
The hole is then.
Over the insulation install laying foil over on top of insulation on the attic floor this is probably the easiest method to install radiant barrier atticfoil is to lay the foil out over the existing insulation on the attic floor.
Before installing determine the insulation material best suited for your home.
How do i add insulation to existing attic insulation.
The vapor retarder on top of or between layers of insulation can trap moisture.
Calculate how much you need.
Check pipes and vents.