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Installing attic insulation over existing insulation.
How do i add insulation to existing attic insulation.
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.
Install fiberglass batts over existing batt insulation.
Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.
Calculate how much you need.
Check pipes and vents.
Faced insulation should not be placed on top of existing insulation in the attic.
Put on goggles and gloves to protect yourself while handling.
Check the depth using a tape measure.
The vapor retarder on top of or between layers of insulation can trap moisture.
Before installing determine the insulation material best suited for your home.
Any new batt or roll insulation installed over existing insulation in the attic needs to be without a vapor retarder face.
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.
Cost effective way to save energy with this old house general contractor tom silva.
Choose your insulation type.
To install fiberglass batts over existing insulation lay the batts perpendicular to the joists so they do not compress the insulation below.
See below for a shopping list and tools subscribe to this old house.
Measure how much insulation you already have.