To install fiberglass batts over existing insulation lay the batts perpendicular to the joists so they do not compress the insulation below.
Installing attic insulation over existing insulation.
Before installing determine the insulation material best suited for your home.
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.
The vapor retarder on top of or between layers of insulation can trap moisture.
Measure how much insulation you already have.
Put on goggles and gloves to protect yourself while handling.
Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.
Install fiberglass batts over existing batt insulation.
Check the depth using a tape measure.
This method can be used in any climate though it historically has been most popular in colder climates.
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.
Any new batt or roll insulation installed over existing insulation in the attic needs to be without a vapor retarder face.
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.
How do i add insulation to existing attic insulation.
Check pipes and vents.
Choose your insulation type.
To view the next video in this series click here.
Calculate how much you need.