CA2291597A1

CA2291597A1 - One-piece flashing

Info

Publication number: CA2291597A1
Application number: CA 2291597
Authority: CA
Inventors: Robert D. Givens
Original assignee: Individual
Current assignee: ARCHITECTURAL EXTERIOR PRODUCTS Inc
Priority date: 1998-12-01
Filing date: 1999-11-30
Publication date: 2000-06-01
Anticipated expiration: 2019-11-30
Also published as: CA2291597C

Abstract

This invention comprises a one-piece flashing formed with first and second panels joined together, watertight, at a first angle along a first line, or region, of intersection. The first angle may be a right angle or it may be the angle between a sloping roof and a vertical wall. The flashing further includes a third panel that makes a watertight junction with the first panel along a second line, or region. of intersection, where the first and third panels meet at a second angle. The third panel also makes a watertight junction with the second panel along a third line, or region, of intersection and at a third angle, and the three lines, or regions, of intersection meet at a common point. It is essential that the panels and all of the junctions between the panels along all of the lines, or regions, of intersection and at the common point be impervious to water. This can be accomplished by forming the flashing as a unitary structure, such as by stamping it or molding it, and, if necessary, forming permanent seals at any abutting edges created during the formation of the flashing.

Claims

1. A self-supporting, one-piece flashing to be fitted against at least two flat, intersecting, non-coplanar surfaces of a building to prevent infiltration of water into the building, said flashing comprising: first, second, and third panels of water-tight, weather-resistant material, each panel comprising first and second edges that converge toward a common location and a third edge that forms a respective part of the periphery of the flashing, each of said first and second edges of each panel radiating out from the common location to the respective part of the periphery of the flashing and being joined watertight to a respective proximal second and first edge of each of the adjoining panels on both sides thereof with the common location of each panel being closely adjacent to and joined watertight to the common location of each of the other panels to form a watertight common corner, at least two of the panels being substantially flat, and at least one of the panels intersecting another of the panels at an angle other than perpendicular, the flashing being watertight from the watertight common corner outward along each of said panels and each of said edges thereof.

2. A self-supporting, one-piece flashing according to claim 1 in which the first and second edges of one of the panels are substantially perpendicular to each other and the first and second edges of another of the panels are not perpendicular to each other.

3. A self-supporting, one-piece flashing according to claim 1 in which each of the panels is not substantially thicker than 1/8".

4. A self-supporting, one-piece flashing according to claim 3 formed of plastic.

5. A self-supporting, one-piece flashing according to claim 4 molded of plastic as a unitary structure.

6. A self-supporting, one-piece flashing according to claim 1 further comprising creases in at least one of the panels emanating from a region proximal to the watertight common corner to allow the angle between two of the panels to be adjusted.

7. A one-piece flashing comprising a plurality of panels of material impervious to water, each of the panels having first and second edges that radiate from a common location, the first and second edges of each of the panels being joined watertight respectively to the first edge of the panel on one side thereof and to the second edge of the panel on the other side thereof, the common locations of all of the panels being substantially at a watertight corner, and the panels being angularly displaced from each other with at least one of the panels being displaced from at least one other of the panels by an angle other then 90°.

8. A one-piece flashing according to claim 7 in which:
(a) the first and second panels are perpendicular to each other; and (b) the third panel is at an angle greater than 90° with respect to the first panel and less than 90° with respect to the second panel.

9. A one-piece flashing according to claim 8 in which:
(a) the first and second panels are operationally substantially flat; and (b) the third panel is concave facing the first and second panels.

10. A one-piece flashing according to claim 7 comprising: a trough joining the third and second panels to direct water away from the first and second panels.

11. A one-piece flashing according to claim 9 comprising:
a trough joining one edge of the third panel of the concave third panel to one edge of the second panel, a main portion of the third panel tilts away from the second panel by an angle less than 90°.

12. A one-piece flashing according to claim 7 in which:
(a) the first and second panels are perpendicular to each other;
(b) the third panel is perpendicular to the first panel and at an angle greater than 90° with respect to the second panel;
(c) the first panel extends away from the second and third panels; and (d) the third panel extends away from the first and second panels and intersects the first and second panels at a common corner.

13. A one-piece flashing according to claim 12 in which the first panel comprises an accordion-pleated section to allow the angle between the second and third panels to be modified.

14. A one-piece flashing according to claim 7 in which: the second panel is at an angle greater than 90°
with respect to the first panel, whereby the first panel can be attached vertically against a wall of a building and the second panel can be placed against a roof stop extending downwardly and outwardly from the wall.

15. A roof stop flashing according to claim 14 in which the first panel is widest at its edge remote from the second panel.

16. A roof stop flashing according to claim 15 in which the third panel comprises two angularly disposed portions.

17. A pre-formed flashing for preventing water infiltration at the intersection of surfaces of a building, said flashing comprising:
(a) a first water-impervious panel that has first and second edges that converge toward a first common location;
(b) a second water-impervious panel that has first and second edges that converge toward a second common location;
(c) a first water-impervious region of intersection joining the first edge of the first panel to the first edge of the second panel, the second panel being angularly displaced at a first angle with respect to the first panel;
(d) a third water-impervious panel having first and second edges:
(e) a second water-impervious region of intersection joining the first edge of the third panel to the second edge of the second panel, (f) a third water-impervious region of intersection joining the second edge of the third panel to the second edge of the first panel, (g) at least a portion of the third panel being angularly displaced at a second angle with respect to the first panel and at least a portion of the third panel being angularly displaced at the second angle with respect to the second panel, whereby the first, second and third panels and the water-impervious regions joining them together define a common corner impervious to water, whereby the one-piece flashing is impervious to water.

18. A preformed flashing according to claim 17 in which:
(a) the first water-impervious region of intersection comprises a sector of a hollow cylinder joining the first panel to the second panel; and (c) the third panel is perpendicular to the first and second panels.

19. A preformed flashing according to claim 18 in which the third panel comprises accordion-pleated section to allow the angle between the first and second panels to be modified.

20. A method of producing a self-supporting, multi-panel, water-impervious flashing comprising the steps of:
(a) heating a quantity of plastic at least sufficient to constitute the flashing; and (b) forming the heated plastic into a desired shape that includes at least three panels, each not substantially thicker than 1/8" and oriented with respect to each other such that they intersect at a common watertight corner.