Fire shield flashing system and method

Abstract

A fenestration flashing system includes a body member having a planar header leg extending horizontally from a rearward end to a forward end, a vertical leg extending upward from the forward end of the header leg, and a positively-sloped drainage leg extending upwardly and rearwardly from a top end of the vertical leg. A termination member has a vertical termination leg for attachment to the back-up wall and a positively-sloped drainage leg to overlap and attach to the positively-sloped drainage leg of the body member. The termination member and the body member define a drainage path down and out of the wall cavity. A method of flashing a fenestration of a cavity wall or non-cavity wall is also disclosed.

Claims

1. A fire-shield flashing system for an exterior rough opening in a cavity wall having a header and side jambs, the system comprising: a body member having a planar header leg extending horizontally from a rearward end to a forward end, a vertical leg extending upward from the forward end of the header leg, a positively-sloped drainage leg extending upwardly and rearwardly from a top end of the vertical leg; a vertical termination leg extending vertically from a position proximate a rearward end of the positively-sloped drainage leg, wherein the vertical termination leg and the positively-sloped drainage leg define a downward drainage path to the vertical leg; and at least one jamb member for each of the side jambs, each of the at least one jamb member comprising: a jamb member face portion; a jamb member body portion continuous with and extending substantially perpendicularly from the jamb member face portion; and a jamb member tab continuous with and extending substantially perpendicularly from a top margin of the jamb member body portion, wherein when installed in the exterior rough opening of the cavity wall, the planar header leg extends towards the rearward end of the planar header leg at least partially across an underside of the header of the exterior rough opening, the vertical leg is disposed in an air cavity between an inner wythe and an outer wythe of the cavity wall, the vertical termination leg is attached to a cavity surface of the inner wythe, the jamb member body portion abuts one of the side jambs, the jamb member face portion abuts the cavity face of the inner wythe, and the jamb member tab portion overlaps the header leg of the body member.

2. The fire-shield flashing system of claim 1, further comprising a weep fabric affixed to the vertical leg of the body member, wherein the weep fabric is configured to wick moisture along the vertical leg downward and out of the air cavity of the cavity wall.

3. The fire-shield flashing system of claim 1, wherein the vertical termination leg is integrally connected to and continuous with the rearward end of the positively-sloped drainage leg.

4. The fire-shield flashing system of claim 1, wherein the vertical termination leg is constructed to abut a cavity face of the inner wythe and further comprises a positively-sloped termination leg extending downwardly and forward from a lower end of the vertical termination leg, wherein the positively-sloped termination leg is sized and constructed to adjustably overlap and abut with the positively-sloped drainage leg of the body member.

5. The fire-shield flashing system of claim 1, further comprising: an end member made of stainless steel and sized and shaped to be installed abutting an inside surface of the body member and to fit within a flashing cavity substantially defined by a cavity face of the inner wythe, the horizontal leg, the vertical leg, and the positively-sloped drainage leg of the body member.

6. The fire-shield flashing system of claim 5, wherein the end member comprises: an end-facing body portion defined within a plurality of edges; and a plurality of side faces extending substantially perpendicularly from respective ones of the plurality of edges of the end-facing body, wherein each of the plurality of side faces is constructed for attachment to the header member.

7. The fire-shield flashing system of claim 5, further comprising a quantity of insulation disposed within the flashing cavity.

8. The fire-shield flashing system of claim 1, further comprising: at least one coupler member having a coupler member positively-sloped leg and a coupler member vertical leg, wherein the coupler member is sized and shaped to abut inside surfaces of the corresponding positively-sloped drainage leg and the vertical leg of adjacent body members.

9. The fire-shield flashing system of claim 1, wherein the vertical leg and the vertical termination leg of the body member are substantially parallel, thereby defining an angle between the vertical leg and the positively-sloped drainage plane that is an alternate interior angle of a transition angle defined between the vertical termination leg and the positively-sloped drainage leg.

10. A method of flashing an exterior rough opening in a cavity wall, the method comprising: providing one or more body members made of stainless steel and each having a planar header leg configured to extend horizontally from a rearward end to a forward end, a vertical leg extending upward from the forward end of the header leg, a positively-sloped drainage leg extending upwardly and rearwardly from a top end of the vertical leg; providing a vertical termination leg made of stainless steel and configured to extend vertically from a position proximate a rearward end of the positively-sloped drainage leg; installing the one or more body members along an entire width of the header with the header leg of each of the one or more body members positioned against and overlapping an underside of a header of the rough opening and extending forward of a cavity face of an inner wythe of the cavity wall, the vertical leg abutting or positioned in close proximity to a cavity face of an outer wythe of the cavity wall, and the vertical termination leg being fixedly attached to the cavity face of the inner wythe of the cavity wall; providing one or more jamb members made of stainless steel and comprising: a jamb member face portion; a jamb member body portion continuous and extending substantially perpendicularly from the jamb member face portion and defining an L-shape; and a jamb member tab portion continuous and extending substantially perpendicularly from a top margin of the jamb member body portion to define a second L-shape; and installing the one or more jamb members with each jamb member body portion abutting a jamb of the exterior rough opening, each jamb member tab portion positioned between and abutting the header leg of the body member, and the jamb member face portion abutting the cavity face of the inner wythe of the cavity wall.

11. The method of claim 10, further comprising: providing one or more interior heat shield members each made of stainless steel and having a heat shield header leg and a heat shield vertical leg; installing each of the one or more interior heat shield members along the header with the heat shield header leg overlapping the header leg of one of the one or more body members and the heat shield vertical leg attached to an interior face of the inner wythe at the exterior rough opening, thereby completely covering the underside of the header with stainless steel.

12. The method of claim 10, further comprising: selecting the one or more body members having the vertical termination leg constructed to abut a cavity face of the inner wythe and including a positively-sloped termination leg extending downwardly and forward from a lower end of the vertical termination leg, wherein the vertical termination leg and the positively-sloped termination leg define a termination member that is adjustably attachable to the flashing header member with the positively-sloped termination leg overlapping and abutting the positively-sloped drainage leg of the body member; and installing the vertical termination leg in abutment with the cavity face of the inner wythe and the positively-sloped termination leg overlapping and abutting the positively-sloped drainage leg of the body member.

13. The method of claim 10, wherein the step of providing one or more body members includes selecting the one or more body members having the vertical termination leg being integrally formed with and continuous with the positively-sloped drainage plane of the body member.

14. The method of claim 10, further comprising: providing at least one end member made of stainless steel and sized and shaped to close a flashing cavity substantially defined by the cavity face of the inner wythe, the horizontal leg, the vertical leg, and the positively-sloped drainage leg, thereby substantially blocking airflow into the flashing cavity; and installing the end member in abutment with of the body member.

15. The method of claim 14, wherein the step of providing at least one end member includes selecting the at least one end member comprising an end-facing body defined within a plurality of edges and a plurality of side faces extending substantially perpendicularly from respective ones of the plurality of edges of the end-facing body, wherein the end member is constructed for fixed attachment of the plurality of side faces to the body member.

16. The method of claim 10, further comprising: affixing a weep fabric to the vertical leg of each of the one or more body members.

17. The method of claim 10, wherein the step of providing one or more body members includes selecting the one or more body members each having a weep fabric affixed to the vertical leg.

18. The method of claim 10, further comprising: disposing a quantity of insulation within a flashing cavity substantially defined by the cavity face of the inner wythe, the horizontal leg, the vertical leg, and the positively-sloped drainage leg.

19. The fire-protection system of claim 1, wherein the planar header member extends at least two inches across the underside of the header of the exterior rough opening.

20. The fire-protection system of claim 1, further comprising at least one internal heat-shield member made of stainless steel and comprising: a heat shield vertical leg constructed to abut an interior face of the exterior rough opening; and a heat shield header leg connected to and extending perpendicularly from the heat shield vertical leg and constructed to overlap the planar header leg of the body member when installed at the header of the exterior rough opening.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective illustration showing components of prior art masonry construction.

(2) FIG. 2 is a perspective illustration of one embodiment of a fenestration flashing system of the present invention.

(3) FIG. 3 is a perspective, exploded illustration of components of another embodiment of a fenestration flashing system of the present invention.

(4) FIG. 4 is a perspective illustration of one embodiment of a jamb member of the present invention shown in FIG. 3.

(5) FIG. 4A illustrates an alternate embodiment of a jamb member of the present invention.

(6) FIG. 5 is a perspective illustration of another embodiment of a flashing body member of the present invention.

(7) FIG. 6 is a perspective illustration showing embodiments of an interior heat shield member and an interior jamb member of the present invention.

(8) FIG. 7 is a side, sectional view of a masonry wall showing one embodiment of a fenestration flashing system installed.

(9) FIG. 8 is a perspective illustration of a cavity wall with one embodiment of a fenestration flashing system installed at a fenestration.

(10) FIG. 9 is a flow chart illustrating exemplary steps of a method of flashing a fenestration of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(11) The preferred embodiments of the present invention are illustrated in FIGS. 2-9. FIG. 2 is a front, side, and top perspective view of one embodiment of a fire shield flashing system 100 of the present invention. Fire shield flashing system 100 includes a body member 110, a vertically-oriented weep fabric 200 affixed to a vertical leg 120 of body member 110, a termination member 300 with a vertical termination leg 302 that connects body member 110 to inner wythe 612 (shown in FIG. 7), and one or more optional end member 400. To connect together adjacent body members 110 and prevent water from seeping through seams between them, fire shield flashing system 100 optionally includes one or more couplers 500, each of which is installed behind and overlapping adjacent body members 110.

(12) Although embodiments of fire shield flashing system 100 are discussed herein with reference to a masonry cavity wall, fire shield flashing system also applies to non-masonry construction having a back-up wall (rather than inner wythe 612) and a faade (rather than outer wythe 614). Accordingly, it is understood that the terms back-up wall and faade may be used interchangeably with the terms inner wythe and outer wythe, respectively.

(13) For the purposes of this disclosure, the terms up and down are used to refer to fire shield flashing system 100 when it is installed in a fenestration of a cavity wall and oriented as shown in FIG. 2. The terms forward and rearward are used in this disclosure consistent with FIGS. 2-8, where forward means towards the outside of the building and the term rearward means towards the inside of the building.

(14) Turning now to FIG. 3, one embodiment of fire shield flashing system 100 is illustrated in an exploded, perspective view. Body member 110 includes a planar header leg 112 that extends substantially horizontally and is sized to extend rearward partially or completely across an underside of rough opening header 610 of inner wythe 612 and also extend forward beyond inner wythe 612 across cavity 620 towards outer wythe 614 (shown in FIGS. 7-8). When installed with header leg 112 on an underside of rough opening header 610 of a fenestration of a cavity wall, body member 110 is adjusted to substantially close air cavity 620 between inner wythe 612 and outer wythe 614.

(15) In one embodiment, body member 110 is approximately six to twelve inches in length 114 from rearward end 116 to forward end 118, with a portion of length 114 extending forward across an underside of a rough opening header 610 and between zero and about six inches extending across air cavity 620 towards cavity face 614a of outer wythe 614 (shown in FIGS. 7-8). Length 114 of header leg 112 can be sized as needed for the thickness of inner wythe 612 (i.e., thickness of the underside of rough opening header 610) and size of air gap 620. Air gap 620 typically is between zero and six inches. For most effective fire protection, length 114 is sized to fully cover underside of rough opening header 610.

(16) A vertical leg 120 extends upwardly from forward end 118 of header leg 112. In one embodiment, vertical leg 120 is about two inches or more in height 122 from a vertical leg lower margin 124 to a vertical leg upper margin 126. In one embodiment, vertical leg 120 is the forward-most portion of body member 110. When installed, vertical leg 120 is positioned in air cavity 620 and in close proximity to, abutting, or in contact with cavity face 614a of outer wythe 614. As such, body member 110 extends across air cavity 620 to substantially close air flow to cavity 620. In some installations, body member 110 is installed with vertical leg 120 spaced about inch or less from cavity face 614a of outer wythe 614. Any resulting gap between vertical leg 120 and cavity face 614a can be closed with placement of a backer rod and/or intumescent sealant as needed.

(17) A positively-sloped drainage leg 130 extends upwardly and rearwardly from vertical leg upper margin 126 and rearwardly towards cavity face 612a of inner wythe 612 (i.e., extending in the general direction as rearward end 116, but with an upward slope.) In some embodiments, positively-sloped drainage leg 130 extends a horizontal distance 132 sufficient to abut or nearly abut inner wythe 612 when vertical leg 116 abuts cavity face 614a of outer wythe 614. Positively sloped leg 130 defines an internal angle with vertical leg 120. In one embodiment, angle is from about 105 to 120, with some embodiments having angle of about 105. A forward end 136 of positively-sloped drainage leg 130 is directly connected to or continuous with upper margin 126 of vertical leg 120. Positively-sloped drainage leg 130 functions as a drainage plane for moisture between inner wythe 612 and outer wythe 614 that provides a continuous moisture drainage path away from inner wythe 612 and down the forward face 120a of vertical leg 120. As is commonly used on moulding at exterior window sills and the like, a slope of about 15 to a horizontal plane (i.e., 105 to a vertical plane) is adequate to drain water from the structure.

(18) Termination member 300 is a separate component adapted to join inner wythe 612 to positively-sloped drainage leg 130. Termination member 300 includes vertical termination leg 302 and a positively-sloped termination leg 312 that define an internal angle . Termination leg 302 is constructed to interface with positively-sloped drainage leg 130. In one embodiment, angle is substantially equal to angle . That is, when vertical termination leg 302 is parallel to vertical leg 120, angle and angle are alternate interior angles. In other embodiments, angle is not the same as angle , but termination member 300 and body member 110 together are constructed to interface and optionally be attached together with positively-sloped termination leg 312 abutting and extending partially along positively-sloped drainage leg 130 of body member 110.

(19) Positively-sloped termination leg 312 may be attached to or installed in abutment with positively-sloped drainage leg 130 of body member 110. Typically, attaching these members together is accomplished by using mechanical fasteners (e.g., screws, rivets, etc.), an adhesive disposed between abutting portions of these members, or by welding. Other methods known in the art are also acceptable. In some embodiments, termination member 300 is installed in contact with body member 110, but the two members 300, 110 are not connected to each other.

(20) Vertical termination leg 302 is constructed to be fixedly attached to inner wythe 612, such as by using fasteners that extend through pre-defined fastener openings 102 and into inner wythe 612, by using a reglet in inner wythe 612, or by using a termination bar 24 attached to inner wythe 612 as discussed above. Therefore, termination member 300, positively-sloped drainage leg 130, and vertical leg 120 define a moisture drainage path 625 (shown in FIG. 8) from inner wythe 612 that extends away from inner wythe 612, out, and down from air cavity 620.

(21) When termination member 300 is a separate component, horizontal length 132 of positively-sloped drainage leg 130 does not have to be accurately determined in advance for the particular structure in which fenestration flashing system 100 is to be installed. Instead, since positively-sloped termination leg 312 overlaps positively-sloped drainage leg 130, termination member 300 allows flexibility in the placement of body member 110 while also enabling water to drain from inner wythe 612 onto the drainage plane of positively sloped drainage leg 130 and out of air cavity 620.

(22) To facilitate drainage of water out of air cavity 620, weep fabric 200 is optionally affixed to vertical leg 120 where it functions as a dedicated pathway for water movement. In one embodiment, positively sloped drainage plane 130 is contiguous with weep fabric 200 on vertical leg 120. In one embodiment, weep fabric 200 is or contains natural or synthetic fibers that move water by way of a wicking action or capillary action. Wicking is also known as fiber tow infiltration. In other embodiments, weep fabric 200 is porous. In contrast to prior-art through-wall flashing and drainage systems, weep fabric 200 is installed along a vertical face, namely, vertical leg 120, where lower fabric end portion 204 optionally extends vertically below lower margin 124 of vertical leg 120. In some embodiments, lower fabric end portion 204 extends about inch to inch (e.g., inch) below lower margin 124. By extending below lower margin 124, lower fabric end portion 204 is less likely to be covered by caulking or the like, which interferes with water removal from air cavity 620. Also, lower fabric end portion 204 wicks water directly to the ambient air where it can evaporate or drip from weep fabric 200.

(23) Optionally, lower fabric end portion 204 includes a plurality of tabs 206 that extend vertically downward from weep fabric body 202. Due to the increased fabric edge path length along tabbed lower fabric end portion 124, such an embodiment has shown to improve water transfer to the ambient compared to a linear edge across weep fabric 200. In one embodiment, tabs 206 are about one inch in width and spaced about eight inches apart. Preferably, tabs 206 are located at each end of header member 110. In one embodiment, tabs 206 are initially sized intentionally longer than necessary, and then are trimmed after installation to be flush or to extend about inch below a cured sealant.

(24) In one embodiment, wicking fabric 200 is made of polyester, polypropylene, polypropylene nylon, or polyethylene. Wicking fabric 200 is preferably about 0.050 inches thick and weighs between five and seven ounces/square yard. Wicking fabric 200 is porous can be either woven or non-woven. A synthetic fiber material is preferred for long life, mildew resistance, and strength. The primary criterion is that wicking fabric 200 has suitable wicking characteristics to remove water from air cavity 620 by capillary action. This is unlike fibers such as cotton, which absorb and retain water.

(25) When installed at a fenestration, body member 110, including portions of termination member 300 in some cases, defines a flashing cavity 106 bounded by inner wythe 612 and body member 110. Prior to installation, during installation, or after installation, flashing cavity 106 is optionally filled with insulation 633 (shown in FIG. 8), such as mineral wool insulation or non-combustible insulation. In one embodiment, for example, body member 110 is provided or purchased with mineral wool insulation 633 already disposed in and secured as needed within flashing cavity 106. Of course, insulation 633 may be added to flashing cavity 106 during or after installation.

(26) Disposing insulation 633 within flashing cavity 106 buffers the transfer of heat to rigid inner wythe insulation 629 located above positively sloped drainage plane 130. In combination with inner wythe insulation 629, insulation 633 also provides a substantially continuous layer of insulation (shown in FIG. 8) that extends all the way to an underside of rough opening header 610 of fenestration header portion 619. Insulating flashing cavity 106 also provides a heat shield that slows heat transfer from below body member 110 to air cavity 620 in the event of a fire.

(27) To retain insulating material 633 within cavity 106 and to also block air and water flow into flashing cavity 106, an optional end member 400 is attached to an open end 113 of body member 110 that in part defines flashing cavity 106. In one embodiment, end member 400 has a planar, vertical body portion 401 sized and shaped to close open end 113. One or more side faces 402 extend substantially perpendicularly from body portion 401 along respective bottom, front, and upper edges of body portion 401. Preferably, one or more side face 402 is pre-punched with fastener openings 102 and ready to be attached to body member 110. For example, one or more end members 400 are connected to body member 110 by using fasteners that extend through a fastener opening 102 in end member 400 that aligns with a corresponding fastener opening 102 in vertical leg 120, positively-sloped leg 130, and/or header leg 112. Optionally, a sealant, an adhesive, a caulk, or the like is used between end member 400 and body member 110 in conjunction with or in place of fasteners. A sealant can further reduce or eliminate air flow into flashing cavity 106 through seams between body member 110 and end member(s) 400.

(28) In one embodiment, body portion 401 of each end member 400 substantially has the same cross-sectional size and shape as that of flashing cavity 106, which is typically a quadrilateral. Thus, end member 400 can be installed within flashing cavity 106 with at least one of side faces 402 abutting header member 110 and/or cavity face 612a of inner wythe 612. In some embodiments, body portion 401 substantially matches the cross-sectional shape of flashing cavity 106 where positively-sloped drainage leg 130 and vertical leg 120 are curved or define another shape.

(29) In some embodiments, end member also includes a vertical tab 403 extending substantially perpendicularly in an upward direction from upper side face 402c. Vertical tab 403 is substantially parallel to and laterally spaced apart from body portion 401 by upper side face 402c. Preferably, vertical tab 403 has an upper margin 403a that is parallel to upper edge of body portion 401. Vertical tab 403 guides water to positively-sloped drainage leg 130 rather than flowing over open end 113, where it may drip or enter cavity 106.

(30) In some embodiments, a plurality of body members 110 are used to span the width of underside of rough opening header 610. In these cases, a flashing coupler member 500 is optionally positioned to overlap and is connected to neighboring body members 110. For example, coupler member 500 has coupler member header leg 512, coupler member vertical leg 520, and coupler member sloped leg 530 that correspond respectively to header leg 112, vertical leg 120, and positively-sloped drainage leg 130 of body members 110. Accordingly, coupler member 500 is positioned to abut the inside surface 110a of neighboring body members 110, thereby substantially closing a gap between these members. Optionally, a sealant or an adhesive is used at the mating faces between coupler member 500 and body members 110 to ensure a watertight seal.

(31) To facilitate connection of components and installation of fire shield flashing system 100, a plurality of optional pre-punched, pre-machined, or pre-formed fastener openings 102 are defined in body member 110, termination member 300, end member 400, jamb member 450, coupler member 500, and/or any other member of fire shield flashing system 100. Fastener openings 102 can be holes, slots, or have other shapes. Fastener openings 102 preferably extend through a member, but optionally are formed as a knockout or mere indentation with a thickness suitable for sheet metal screws or other fastener. In one embodiment, fastener openings 102 on downwardly-sloping transition leg 312 and on positively-sloped leg 130 are slots, thereby permitting adjustable positioning and connection of these members. Fastener openings 102 in one member (e.g., body member 110) correspond to fastener openings 102 in another member (e.g., end member 400), which facilitates easy and rapid installation of fire shield flashing system 100.

(32) Referring now to FIG. 4, a front perspective view illustrates one embodiment of a jamb member 450 shaped to be installed along the jamb adjacent an upper left fenestration corner. Since jamb member 450 for an upper right corner of fenestration is symmetrical to jamb member 450 for an upper left corner of fenestration, only the upper left jamb member 450 is discussed. In some embodiments of fenestration flashing system 100, jamb members 450 are installed on the jamb adjacent one or both upper corner of the fenestration. Each jamb member 450 protects the jamb and cavity surface 612a of the inner wythe 612 at the upper corner of a fenestration 605. In the event of a fire, jamb member 450 helps prevent burning or scorching and reduces heat transfer to insulation and structural members at corners of a fenestration.

(33) In one embodiment, jamb member 450 substantially has an L-shape that includes a jamb member face portion 452 extending transversely from a jamb member body portion 454. Jamb member face portion 452 is constructed to abut cavity surface 612a of inner wythe 612 at an upper corner of fenestration 605. In one embodiment, jamb member face portion 452 has a rectangular shape, but may have other shapes, such as an inverted right triangle. When installed, jamb member body portion 454 extends rearwardly into fenestration 605 towards the inside of the building. In one embodiment, a jamb member tab 456 extends perpendicularly from a top margin 454a of jamb member body portion 454, where jamb member tab 456 is configured to extend slightly along header and overlap body member 110. Preferably, jamb member tab 456 defines one or more fastener openings 102 that correspond to fastener opening(s) 102 on header leg 112 of body portion 110.

(34) As shown in FIG. 4, jamb member face portion 452 is a rectangle with the same height as jamb member body portion 454 and that does not extend vertically above top margin 454a. In other embodiments as shown in FIG. 4A, jamb member face portion 452 has an inverted L-shape with one leg 452a that extends along the jamb and laterally away from the fenestration opening. Another leg 452b extends above top margin 454a and along fenestration opening. Thus, jamb member face portion 452 protects cavity surface 612 of inner wythe 612 from flames that lick up and around the upper corners of the fenestration.

(35) Referring now to FIG. 5, another embodiment of body member 110 is illustrated in front, side, and top perspective view. Here, body member 110 is a single, contiguous piece of metal that includes vertical termination leg 302. Vertical termination leg 302 extends vertically from a lower end 306 that is connected to a rearward end 134 of positively-sloped drainage leg 130. In one embodiment, vertical termination leg 302 extends about two to four inches vertically from lower end 306 to an upper end 304; other suitable dimensions are acceptable. In the embodiment shown in FIG. 5, vertical termination leg 302 is a continuous with and extends from positively-sloped drainage leg 130. This monolithic embodiment differs from other embodiments discussed above in which vertical termination leg 302 is part of termination member 300 that is a separate component of fenestration flashing system 100 and that also includes a positively-sloped termination leg 312 for overlapping positively-sloped drainage leg 130 of body member 110 when installed.

(36) Referring now to FIG. 6, a perspective view illustrates embodiments of an optional internal heat shield member 600 and optional internal jamb member 650. Internal heat shield member 600 has a header leg 602 sized and configured to abut the rough opening header and overlap or abut header leg 112 of body member 110. An interior vertical leg 604 extends perpendicularly from header leg 602 in an upward direction to abut the interior framing members of the fenestration opening. Preferably, header leg 602 and interior vertical leg 604 of internal heat shield member 600 are pre-punched with one or more fastener openings 102. Internal heat shield member 600 enables fire shield flashing system 100 to completely cover the header of a fenestration while also allowing for easy adjustment to variations in wall thickness.

(37) Like internal heat shield member 600, internal jamb member 650 provides an extension of jamb member body portion 454 of jamb member 450 along the jamb of a fenestration. Internal jamb member has a internal jamb member body portion 652 and an internal jamb member face portion 654 that extend at right angles to one another in an L shape. Internal jamb member body portion 652 is sized to extend along the jamb to abut or overlap body portion 454 of jamb member 450. Internal jamb member face portion 654 is configured to abut the internal framing of the fenestration. As with other components, it is preferred that internal jamb member 650 is pre-punched with one or more fastener openings 102.

(38) Referring now to FIGS. 7 and 8, a side sectional view and a perspective view, respectively, are illustrated of a portion of one embodiment of a cavity wall 600 with one embodiment of fenestration flashing system 100 installed at fenestration 605 between inner wythe 612 and outer wythe 614. A lintel 621 supports masonry members 618 of outer wythe 614 with outer wythe 614 being spaced apart from inner wythe 612 by air cavity 620. In one example, air cavity 620 is about four inches from cavity surface 612a of inner wythe 612 to cavity surface 614a of outer wythe 614. For clarity, jamb member 450 is not shown in FIG. 7.

(39) Body member 110 is installed on inner wythe 612 with header leg 112 positioned below and abutting fenestration header portion 619 of inner wythe 612. Header leg 112 of body member 110 extends forward towards outer wythe 614 and turns upward forming vertical leg 120, to which weep fabric 200 is affixed. Header leg 112 extends rearward at least partially along underside of rough opening header 610 to interior insulation, framing, or finish materials (e.g., drywall). For example, header leg 112 extends rearward (i.e., towards the inside) along underside of rough opening header 610 at least two inches. Interior heat shield member 600 is attached to rough opening header 610 with header leg 602 overlapping header leg 112 and secured by a fastener 99. Interior vertical leg 604 is secured by fastener 99 to inside face of rough opening header 610.

(40) Vertical leg 120 (with weep fabric 200 affixed thereto) is in close proximity to (e.g., about inch or less) or abuts lintel 621 and/or cavity face 614a of outer wythe 614. When vertical leg 120 abuts lintel 621 (or inner face 614a of outer wythe 614, when no lintel 621 is present), air flow access into air cavity 620 is blocked, thereby reducing the ability of fire to spread through air cavity 620. Weep fabric 200 extends below lower margin 124 of vertical leg 120 to vacate water down and out of cavity wall 600 behind outer wythe 614.

(41) Positively-sloped drainage leg 130 extends upwardly and rearwardly at angle from vertical leg 120 towards cavity surface 612a of inner wythe 612. In the embodiment shown in FIG. 7, positively-sloped drainage leg 130 may or may not extend sufficiently to contact cavity surface 612a. Accordingly, separate termination member 300 is attached to cavity surface 612a of inner wythe 612 and optionally to positively-sloped drainage leg 130, thereby defining a continuous path 625 (shown in FIG. 8) for water in air cavity 620 to travel down and out of air cavity 620 via positively-sloped drainage leg 130 and vertical leg 120 with weep fabric 200. By draining water out and down from air cavity 620, rather than horizontally through outer wythe 614, fenestration flashing system 100 improves the aesthetic appeal of the faade by reducing or eliminating staining caused by water drainage, particularly when the water contains contaminants.

(42) Inner wythe insulation 629 (e.g., rigid fiberglass board) is installed against cavity surface 612a of inner wythe 612 and optionally contacts positively-sloped transition leg 312 and/or positively-sloped drainage leg 130. Flashing cavity 106 of fire shield flashing system 100 is filled with non-combustible flashing cavity insulation 633 (e.g., mineral wool insulation). With inner wythe insulation 629 installed along cavity surface 612a and flashing cavity insulation 633 disposed in flashing cavity 106, cavity wall 600 is insulated substantially continuously to underside of rough opening header 610. End member 400 (not shown in FIG. 7 for clarity; shown in FIG. 8) is installed in flashing cavity 106 to hold insulation 633 in place as well as to block air flow into flashing cavity 106. As shown in FIG. 8, jamb member 450 is installed at the upper left corner of fenestration 605 with jamb member face portion 452 against cavity surface 612a of inner wythe 612.

(43) Referring now to FIG. 9, a method 800 of flashing a fenestration 605 of a cavity wall 600 is now described. In some embodiments, cavity wall 600 is a masonry wall, however, method 800 applies to cavity walls 600 with claddings made of other materials. Although method 800 is described for cavity wall 600, flashing system 100 of the present invention may similarly be installed on non-cavity walls, such as EIFS and stucco finishes. For example, in non-cavity construction, the exterior cladding assumes the role of the faade or outer wythe 614 and is installed in abutment with insulation 629 or the back-up wall or inner wythe 612. Similar to as shown in FIG. 7, this could be where gap 620 is completely filled with insulation or where the cladding (e.g., EIFS instead of bricks 618) is installed against face 612a of a back-up wall or inner wythe 612.

(44) In step 805, one or more body members 110 are provided, where each body member 110 has a planar header leg 112 extending horizontally from a rearward end 116 to a forward end 118, a vertical leg 120 extending upward from forward end 118 of header leg 112, and a positively-sloped drainage leg 130 extending upwardly and rearwardly from a top end 134 of vertical leg 120.

(45) Optionally, one or more body members 110 may be selected instead of body members 110. Flashing body member(s) 110 include a vertical termination leg 302 extending vertically from a rearward end 134 of positively-sloped drainage leg 130. For example, vertical termination leg 302 is continuous with and integrally attached to positively-sloped drainage leg 130 of body member 110. In another embodiment as discussed below in steps 815 and 820, vertical termination leg 302 is part of termination member 300.

(46) Whether selecting body member 110 or body member 110, there is the option of having a weep fabric 200 affixed to the vertical leg 120. In one embodiment, weep fabric 200 is sized to have a lower end 204 extend below the forward end of the header leg 112. Optionally, weep fabric 200 includes a plurality of tabs 206 along a lower end 204.

(47) When more than one body member 110 is required to span a fenestration opening, one or more coupler members 500 are provided as noted in step 810. Each coupler member 500 has coupler member positively-sloped leg 530 and coupler member vertical leg 520, where the coupler member 500 is sized and shaped to abut an inside surface 110a of the corresponding positively-sloped drainage leg 130 and the vertical leg 120 of body member 110. Each coupler member 500 may optionally include coupler member header leg 512.

(48) In step 815, the flashing header member(s) 110 or 110 are installed along a fenestration 605 with header leg 112 abutting underside of rough opening header 610 and extending forward of a cavity face 612a of a back-up wall 612 of the cavity wall 600 and the vertical leg 120 abutting or positioned in close proximity to a cavity face 614a of a faade 614 of the cavity wall 600. When an optional weep fabric 200 is attached to vertical leg 120, vertical leg 120 is considered to be abutting back-up wall 612 when weep fabric is in contact with back-up wall 612 whether or not vertical leg 120 directly contacts back-up wall 612. The flashing header member(s) 110 or 110 extend from a first upper corner (e.g., upper left corner) to a second upper corner (e.g., upper right corner) of the fenestration. When one or more body members 110 or 110 are installed in a single fenestration, optional coupler members 500 may be provided where a coupler member 500 is installed between neighboring body members 110 or 110, as the case may be.

(49) In step 820, when body member 110 is used, one or more termination members 300 is provided. Termination member 300 has vertical termination leg 302 and positively-sloped transition leg 304. Positively-sloped termination leg 304 is adjustably attachable to body member 110 with the positively-sloped termination leg 304 overlapping and abutting positively-sloped drainage leg 130 of body member 110.

(50) In step 825, positively-sloped termination leg 304 is positioned to overlap and abut positively-sloped drainage leg 130 of body member 110. In one embodiment, positively-sloped termination leg 304 is fixedly attached to positively-sloped drainage leg 130 of body member 110, such as by using fasteners, adhesive, welding, or other method known in the art of sheet metal fabrication.

(51) In step 830, vertical termination leg 302 is fixedly attached to the cavity face 612a of the back-up wall 612.

(52) In step 835, insulation is optionally disposed in the flashing cavity. In either case where body member 110 or body member 110 is used, a quantity of optional, non-combustible insulation 633 is disposed within flashing cavity 106 substantially defined by the cavity face 612a of the back-up wall 612, horizontal leg 112, vertical leg 120, and positively-sloped drainage leg 130. Step 835 may be performed contemporaneously with forming body member 110 or with installation of body member 110.

(53) In step 840, one or more end members 400 is optionally provided, where each end member 400 is sized and shaped to close a flashing cavity 106 substantially defined by cavity face 612a of the back-up wall 612, horizontal leg 112, vertical leg 120, and positively-sloped drainage leg 130 of body member 110, 110, thereby substantially blocking airflow into flashing cavity 106. In one embodiment of the method, end member(s) 400 have a body portion 401 and a plurality of side faces 402 extending substantially perpendicularly from a corresponding edge of body portion 401, where each side face 402 is constructed for fixed attachment to the body member 110.

(54) In step 845, end member(s) 400 are installed on body member 110, 110 so as to close or substantially close an opening to flashing cavity 106. In one embodiment, end member 400 is installed in abutment with an inside surface 110a of body member 110. Attachment may be accomplished using fasteners, adhesive, or other methods known in the art of sheet metal fabrication.

(55) In step 850, weep fabric 200 is optionally installed if it is not present. As when selecting a body member 110, 110 without the optional weep fabric already affixed to the vertical leg 120, a weep fabric may be affixed to vertical leg 120 of each body member 110, 110. In one embodiment, weep fabric 200 is optionally sized to extend below forward end 118 of the header leg 112. In another embodiment, weep fabric 200 includes a plurality of tabs 206 along a lower end 204.

(56) In step 855, one or more jamb members 450 optionally are provided. Jamb member(s) 450 include a jamb member face portion 452 and a jamb member body portion 454.

(57) In step 860, each jamb member 450 is installed with jamb member face portion 452 abutting cavity face 612a of back-up wall 612 of cavity wall 600 and jamb member body portion 454 against the jamb.

(58) Fenestration flashing system 100 interrupts, redirects, and stops water from entering a fenestration header portion and thereby protects fenestration header portion from water dams. Components of fenestration flashing system 100 are made of stainless steel, such as stainless steel sheet metal having a gauge of 22, 24, 26, or 28.

(59) The life expectancy of stainless steel is approximately 100 years or more and is UV stable, waterproof, weather resistant, will not soften or drool, and is compatible (i.e., inert) with a full range of sealants. The quick-connect joints with pre-defined fastener openings 102 allows for secure coupling and joining of system components. Consistent spacing and hole sizes of fastener openings 102 are pre-defined in the factory, so fenestration flashing system 100 can be assembled by low-skill-set tradespeople. Fenestration flashing system 100 also enables installation compliance to be done prior to installation of the exterior faade. Fenestration flashing system 100 supports membrane flashing overlays, such as through-wall masonry flashing.

(60) Although the preferred embodiments of the present invention have been described herein, the above description is merely illustrative. Further modification of the invention herein disclosed will occur to those skilled in the respective arts and all such modifications are deemed to be within the scope of the invention as defined by the appended claims.