Bring the attic inside insulating between the rafters simplifies the air sealing details.
How to insulate attic knee wall door.
Then either fiberglass batts secured in place or netted cellulose is used to fill the rafter cavities.
Rake walls it s easier to handle than plywood or thermo ply and still gives you an r 19 r121 assembly depending on the original batt insulation installed.
How to insulate knee walls knee walls that share space with a conditioned room in your home should have a combination of both traditional insulation and foil radiant barrier insulation.
First you will want to add traditional insulation between the studs this can be batt insulation spray foam or even rigid foam insulation.
Another alternative for knee walls conditions is to remove and reinstall the batt insulation to qii standards.
More details online 1.
For insulation create a lightweight box that fits over the stairs and can be moved to allow entry.
Then cover that same area with an r 8 fsk affixing it using cap nails.
The attic hatch or scuttle hole is a removable panel in the dry walled ceiling located in.
Once you have the materials you can begin to seal and insulate the knee wall access door through these steps.
This ensures a tight seal between the door and the opening.
In the case of a knee wall door insulate the walls.
Air sealing and insulating the knee wall can make the attic space warmer more efficient and more comfortable.
The other is spraying at least 2 of closed cell spray foam directly onto the roof deck encapsulating the rafters.
In tight attics or odd shaped wall conditions i e.
From inside the attic check for any openings holes or fenestrations into the knee wall surrounding area.
One of the best methods is rigid foam board with sealed joints over insulation in the knee wall.
Now a note on materials for insulating the actual knee wall.
Step 1 apply weather stripping apply weather stripping to the perimeter of opening not the attic door cover.
There are as many ways to do it as there are people who do it.
Apply weather stripping to the door to create a seal.