This type of insulation may be faced with silver foil with the foil facing inward toward the crawl space.
Insulating attic crawl space doors.
Crawl spaces can be major sources of home energy loss whether or not your ventilation system routs through the crawl space area.
Concrete block brick and even stone.
Two inch expanded polystyrene foam board is the favored insulation for crawl space inside walls.
You can add insulation and weather stripping to the door you have.
On the door pictured below i added a 1 foil insulation board to the back of this door adding an r value of 6 5.
Insulating a crawlspace door short of ripping the door out there is a simple fix you can do to increase the r value.
Crawl space door without louvers for crawl space access ventilation or encapsulation white 16 height x 32 width 4 4 out of 5 stars 2.
The access door is in our closet which is fine except the fact that the crawl space has very little insulation and neither does the door.
Add foam insulation tape around the edges to seal the perimeter where it rests in the access hole.
Then add insulation batting to form a pillow and wrap it up like a birthday present as shown.
Here s one good method.
Rigid foam insulation works for any type of masonry wall.
Staple long pieces of duct tape sticky side up onto the attic scuttle door.