The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.
How to add batt insulation to attic.
Another method of insulating skylights is to use batts with facing between the studs and then cover the entire passage with rigid foam insulation.
Measure how much insulation you already have.
To apply it simply cut it along the side of the insulation slip it over the pipes and then re seal it with tape.
Install fiberglass batts over existing batt insulation.
Check the depth using a tape measure.
How to install attic insulation over existing insulation wear a long sleeve shirt gloves eye protection and a dust mask.
Start at the lowest part of the attic where the roof meets the outer wall and unroll the insulation perpendicular to the joists back toward the.
When adding additional insulation you do not have to use the same type of insulation that currently exists in your attic.
You can add loose fill on top of fiberglass batts or blankets and vice.
Lay the batts perpendicular to the joists so.
Put on goggles and gloves to protect yourself while handling.
The foam can be secured to the studs with cap nails.
Make sure that the entire lengths of the pipes are covered to ensure maximum protection.
Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.
Add the right kind of insulation.
Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used.
To keep the blown in insulation from falling through the attic hatch opening make a 2x12 dam around the hatch perimeter.
Cut two layers of r 19 fiberglass batt insulation slightly larger than the hatch and staple duct tape to the hatch edges to secure it in place.
Make sure you use an unfaced batt one without a paper or foil layer so the insulation does not trap moisture in the ceiling.
How do i add insulation to existing attic insulation.
The house wrap helps hold the insulation in place and slows airflow.