Box Style Attic Stairway Insulator

Reducing heat loss in the winter and heat gain in the summer.

Box style attic stairway insulator.

Our attic stairway insulator is simple to install and remove. Step 1 measure the dimension of the opening. After closing the opening measure its dimensions and then cut four lengths of foam to form a box that fits into the door opening. Attic stairways are a major source of energy loss in a typical home.

I also made the box wider and longer than the attic stair opening so that i could install weather stripping on the bottom to create a tight seal. Attach the blanket insulation to the attic side of the cover box with adhesive and wrap it with building wrap or other air barrier to prevent air movement in the insulation from degrading its r value. The box should rest squarely on top of the attic stairs frame or on wood stops installed to support it. I made the box wider than the custom piece so it would fit over the first box.

If you have a drop down attic stairs pull up the stairs and close the opening completely. Cut the top of the attic insulation box out of 1 2 inch plywood to the length and width previously measured. Insulated attic stair cover box. To avoid wasting money on energy you should insulate your attic stairs properly.

Attach the blanket insulation and wrap it. 5 assemble the frame of the box by screwing the four pieces of cut lumber together. Finally i made the main insulated attic stair box cover.