General purpose insulation bag

1. A general purpose insulation bag comprising:

a jacket configured to form a desired three dimensional shape, the jacket forming a cavity therewithin and having an opening, the opening covered by a covering structure, the jacket having an air permeability rating in a range of about 100 cubic feet per minute to about 140 cubic feet per minute, the jacket composed of a flexible material configured to maintain a partially-filled arrangement,

wherein in the partially-filled arrangement, the jacket is filled with a volume of insulative material that is less than the jacket fully filled with insulative material and wherein in the partially-filled arrangement a height of the partially-filled jacket is less than a height of the fully filled jacket; and

the insulative material positioned within the cavity and configured to form an insulative layer, the insulative layer having a thickness configured to provide a desired insulative value to the general purpose insulation bag;

wherein the opening is configured to retain the insulative material within the cavity formed within the jacket.

2. The general purpose insulation bag of claim 1 , wherein the jacket forms an upper panel, a lower panel, opposing side panels and opposing end panels, and wherein the upper panel is connected to the opposing side panels and the opposing end panels by sewn seams and the lower panel is connected to the opposing side panels and the opposing end panels by sewn seams.

3. The general purpose insulation bag of claim 1 , wherein the covering structure is a flap.

4. The general purpose insulation bag of claim 1 , wherein the covering structure has a leading edge, and wherein the leading edge is positioned a distance from the opening in a range of from about 6.0 inches to about 10.0 inches.

5. The general purpose insulation bag of claim 1 , wherein the jacket includes a plurality of perforations configured to allow air to flow through the jacket.

6. The general purpose insulation bag of claim 1 , wherein the flexible material forming the jacket has a thickness resulting in a weight in a range of from about 2.0 ounces per square foot to about 3.0 ounces per square foot.

7. The general purpose insulation bag of claim 1 , wherein the jacket is formed from a fibrous web of non-woven fibers.

8. The general purpose insulation bag of claim 1 , wherein the bag has a length in a range of from about 30.0 inches to about 40.0 inches, a height in a range of from about 12.0 inches to about 18.0 inches and a depth in a range of from about 20.0 inches to about 28.0 inches.

9. The general purpose insulation bag of claim 1 , wherein the bag provides an insulative value in a range of from about R-40 to about R-160.

10. The general purpose insulation bag of claim 1 , wherein the bag is sized for insertion between framing members forming a building scuttle.

11. The general purpose insulation bag of claim 1 , wherein the opening is a slit.

12. The general purpose insulation bag of claim 11 , wherein the slit extends vertically a height of the bag.

13. The general purpose insulation bag of claim 1 , wherein the insulative material within the bag is loosefill insulative material.

14. The general purpose insulation bag of claim 13 , wherein the loosefill insulative material is binderless.

15. An insulated interior building cavity comprising:

an interior building cavity formed between framing members;

one or more general purpose insulation bags positioned in the interior building cavity and configured to insulate the interior building cavity, the one or more general purpose insulation bags comprising:

a jacket configured to form a desired three dimensional shape, the jacket forming a cavity therewithin and having an opening, the opening covered by a covering structure, the jacket having an air permeability rating in a range of about 100 cubic feet per minute to about 140 cubic feet per minute, the jacket composed of a flexible material configured to maintain a partially-filled arrangement,

wherein in the partially-filled arrangement, the jacket is filled with a volume of insulative material that is less than the jacket fully filled with insulative material and wherein in the partially-filled arrangement a height of the partially-filled jacket is less than a height of the fully filled jacket; and

the insulative material positioned within the cavity of the jacket and configured to form an insulative layer, the insulative layer having a thickness configured to provide a desired insulative value to the general purpose insulation bag;

wherein the opening is configured to retain the insulative material within the cavity formed within the jacket.

16. A method of insulating an interior building cavity, comprising the steps of:

positioning one or more general purpose insulation bags in the interior building cavity, the one or more general purpose insulation bags comprising:

a jacket configured to form a desired three dimensional shape, the jacket forming a cavity therewithin and having an opening, the opening covered by a covering structure, the jacket having an air permeability rating in a range of about 100 cubic feet per minute to about 140 cubic feet per minute, the jacket composed of a flexible material configured to maintain a partially-filled arrangement,

wherein in the partially-filled arrangement, the jacket is filled with a volume of insulative material that is less than the jacket fully filled with insulative material and wherein in the partially-filled arrangement a height of the partially-filled jacket is less than a height of the fully filled jacket; and

the insulative material positioned within the cavity of the jacket and configured to form an insulative layer, the insulative layer having a thickness configured to provide a desired insulative value to the general purpose insulation bag;

wherein the opening is configured to retain the insulative material within the cavity formed within the jacket.