Prefabricated flashing product

1. A prefabricated flashing product for an opening having a top, bottom, and two sides in an exterior surface of a structure, the flashing product comprising:

a generally planar flange shaped to conform to the exterior surface, the flange extending outwardly from an entire perimeter of an aperture therein that corresponds to the opening;

a return, having top, bottom and side return members, that seals to the flange about the aperture and extends substantially perpendicularly therefrom toward an inward direction of the opening; and

an upper flap that seals to an upper edge of the flange and extends downwardly from the upper edge towards the aperture for folding over and sealing a nailing fin of a window product, the upper flap sealing to the upper edge via a living hinge such that the upper flap, the flange, and the return are monolithic;

the flange and the return collectively comprising a single piece of waterproof material.

2. The flashing product of claim 1 , the bottom return member forming an interior surface that slopes downwardly from a distal edge of the bottom return member towards the aperture, to drain water towards the aperture.

3. The flashing product of claim 2 , the interior surface forming a slope that is between 0.1 and 0.5 inches per foot.

4. The flashing product of claim 2 , the distal edge of the bottom return member forming a return stop that is elevated relative to the interior surface, to prevent water from draining out of the return away from the aperture.

5. The flashing product of claim 2 , further comprising ribs extending atop the bottom return member from flush to the distal edge to the aperture, the ribs comprising level upper surfaces for seating a building product thereon.

6. The flashing product of claim 1 , further comprising an end dam and a return channel that are formed below and adjoining a distal edge of the top return member.

7. The flashing product of claim 1 , the top return member further comprising a drip margin formed below and adjoining the flange.

8. The flashing product of claim 1 , the flange and the return located about a reinforcing member comprising metal or fiberglass.

9. The flashing product of claim 1 , further comprising an adhesive strip disposed along an inner edge of the upper flap, and a release paper on the adhesive strip.

10. The flashing product of claim 1 , the flange comprising a thickness between 20 and 100 mils, and extending outwardly from the aperture for a distance in the range of four to twelve inches.

11. The flashing product of claim 1 , further comprising indicia comprising installation instructions.

12. The flashing product of claim 10 , the indicia denoting one or more locations where penetrating the product with a fastener is either allowed or forbidden.

13. The flashing product of claim 1 , further comprising:

an attachment for attaching the flashing product to the exterior surface through one or both of the return and flange; and

a self-sealing adhesive strip that seals about the attachment.

14. Prefabricated flashing product for an opening in an exterior surface of a structure, comprising:

a flange shaped to conform to the exterior surface and extending outwardly from an entire perimeter of the opening;

a return, having a top, bottom, and sides return members, that seals to the flange about the perimeter and extends substantially perpendicularly therefrom toward an interior of the structure; and

an upper flap that seals to an upper edge of the flange and extends downwardly from the upper edge towards the aperture for folding over and sealing to a window product;

the flange and the return collectively comprising a single piece of waterproof material, and

an attachment for attaching the flashing product to the exterior surface through one or both of the return and flange; and

a self-sealing adhesive strip that seals about the attachment.

15. A prefabricated flashing product for an opening having a top, bottom, and two sides in an exterior surface of a structure, the flashing product comprising:

a generally planar flange shaped to conform to the exterior surface, the flange extending outwardly from an entire perimeter of an aperture therein that corresponds to the opening;

a return, having top, bottom and side return members, that seals to the flange about the aperture and extends substantially perpendicularly therefrom toward an inward direction of the opening;

an upper flap that seals to an upper edge of the flange and extends downwardly from the upper edge towards the aperture for folding over and sealing a nailing fin of a window product;

the flange and the return collectively comprising a single piece of waterproof material; and,

an adhesive strip disposed along an inner edge of the upper flap, and a release paper on the adhesive strip.

16. The flashing product of claim 15 , the bottom return member forming an interior surface that slopes downwardly from a distal edge of the bottom return member towards the aperture, to drain water towards the aperture.

17. The flashing product of claim 16 , the interior surface forming a slope that is between 0.1 and 0.5 inches per foot.

18. The flashing product of claim 16 , the distal edge of the bottom return member forming a return stop that is elevated relative to the interior surface, to prevent water from draining out of the return away from the aperture.

19. The flashing product of claim 16 , further comprising ribs extending atop the bottom return member from flush to the distal edge to the aperture, the ribs comprising level upper surfaces for seating a building product thereon.

20. The flashing product of claim 15 , further comprising an end dam and a return channel that are formed below and adjoining a distal edge of the top return member.

21. The flashing product of claim 15 , the top return member further comprising a drip margin formed below and adjoining the flange.

22. The flashing product of claim 15 , the flange and the return located about a reinforcing member comprising metal or fiberglass.

23. The flashing product of claim 15 , the flange comprising a thickness between 20 and 100 mils, and extending outwardly from the aperture for a distance in the range of four to twelve inches.

24. The flashing product of claim 15 , further comprising indicia comprising installation instructions.

25. The flashing product of claim 24 , the indicia denoting one or more locations where penetrating the product with a fastener is either allowed or forbidden.