Step 1 apply weather stripping.
How to insulate the attic door.
First install foam weather stripping on the inside of the trim or directly onto the hatch.
Cut a piece of fiberglass or rigid foam board insulation the same size as the attic hatch and nail or glue it to the back of the hatch.
Apply weather stripping to the door to create a seal.
Fortunately there are kits available to insulate these kind of doors.
There are different ways to accomplish this.
Cut out two pieces of rigid foam board that are 1 4 inch smaller than the hatch so homeowners can slide the attic access panel open easily.
To insulate an attic hatch you need weather stripping rigid foam board and fiberglass batt insulation.
Inspect the weatherstripping gaskets around the attic hatch opening.
To insulate an attic get some batting made out of mineral wool fiberglass or recycled foam.
This ensures a tight seal between the door and the opening.
Despite both of these attic doors being easy to insulate many contractors don t do it.
Here s how to do it yourself.
Staple long pieces of duct tape sticky side up onto the attic scuttle door.
Add foam insulation tape around the edges to seal the perimeter where it rests in the access hole.
Use spray foam to air seal these openings if they exist.
You can check for air leaks with a lit incense stick or a thin.
Here s one good method.
Additionally purchase some loose fill insulation to insulate corners and angles where the batting won t fit.
Once you have the materials you can begin to seal and insulate the knee wall access door through these steps.
You ll want to buy enough batting to lay at least 10 to 14 inches over the entire space.
Weatherstrip the edges and put a piece of rigid foam board insulation on the back of the door.
From inside the attic check for any openings holes or fenestrations into the knee wall surrounding area.
Check for air leaks and wood stops.
Add fiberglass or rigid foam.
Apply weather stripping to the perimeter of opening not the attic door cover.