Flashing system and method of installation

Abstract

A flashing device comprised of one or more components adapted to render seams found in interior walls impervious to moisture. The flashing system utilizes a combination of a waterproof, durable construction with a fluid-shedding shape to prevent moisture from penetrating wall seams and causing damage to the sub-wall and floor. The components include flashing strips adapted for use along walls, and corner pieces adapted for use with inside and outside corners. A method for installing the flashing system, allowing for quick, easy, and effective waterproofing of so-called “wet rooms,” which include commercial kitchens, dish rooms, mop rooms, lavatories, and the like which are cleaned by directing water and/or cleaning fluids at the floor and walls.

What I claim:  
     
         1 . In the interior of a structure, said interior formed of one or more walls, each said wall being comprised of a wall substrate, a wall covering adapted to be positioned over the wall substrate, and base tile adapted to be positioned over the wall substrate and located along the lower portion of the wall directly below and adjacent to the wall covering, with the wall covering and base tile forming a seam, 
 a flashing system, comprising    one or more of the following: 
 a wall sealing component;  
 an inside corner sealing component; and  
 an outside corner sealing component;  
   wherein the flashing system is adapted to be positioned within and over the seam such that moisture contacting the wall will not penetrate the seam but rather is directed downward and away from the seam.    
     
     
         2 . The flashing system of  claim 1 , wherein the wall sealing component comprises 
 one or more flashing strips;    wherein each flashing strip is constructed of a material impervious to moisture,    has an exterior surface and an interior surface,    has a substantially uniform thickness,    has a first end and a second end,    has an upper flange which is substantially planar and oriented substantially vertically,    has a lower flange with a lower edge, with the lower flange being substantially planar and oriented substantially vertically in a plane substantially parallel and exterior to the plane of the upper flange,    has a shaped transition area integrated with and interposed between the upper flange and the lower flange,    has an attachment component suitably adapted for attaching the flashing strip to a wall, and    is of seamless once piece construction,    whereby the first end of each flashing strip is suitably adapted to partially overlap the second end of an adjacent flashing strip,    each flashing strip is suitably adapted to be positioned along the wall of a structure, the wall having a wall substrate, a wall covering, and base tile located along the lower portion of the wall directly below and adjacent to the wall covering, such that the upper flange is placed between the wall substrate and the wall covering with the exterior surface of the upper flange positioned against the wall covering and the interior surface of the upper flange positioned against the wall substrate, and the lower flange is placed over base tile with the interior surface of the lower flange positioned against base tile, such that the flashing strip extends from and through a seam formed at the junction of the wall covering and base tile, such that moisture contacting the wall in the area of the flashing strip is directed downward and away from said seam.    
     
     
         3 . The flashing system of  claim 2 , wherein the wall sealing component is constructed of a material resistant to chemical corrosion.  
     
     
         4 . The flashing system of  claim 2 , wherein the wall sealing component is constructed of a material selected from the group comprising aluminum, stainless steel, steel, fiberglass, rigid plastic, rubberized plastic, polymer matrix composites, metal matrix composites, ceramic matrix composites, laminate matrix composites, polycarbonate, and polystyrene.  
     
     
         5 . The flashing system of  claim 2 , wherein the lower flange of each flashing strip has a varying width, with the width of the lower flange at the first end of the flashing strip greater than the width of the lower flange at the second end of the flashing strip, the difference in width being substantially equal to the thickness of the flashing strip, with the width of the lower flange changing at a substantially constant rate from the first end to the second end, thereby forming a slight upward taper along the lower edge of the lower flange as viewed from the first end to the second end.  
     
     
         6 . The flashing system of  claim 2 , wherein the lower edge of the lower flange of each flashing strip is angled rearward.  
     
     
         7 . The flashing system of  claim 2 , wherein the shaped transition area of each flashing strip is oriented substantially perpendicular to the upper flange and extends outward and downward from the upper flange in a smoothly curving manner until it achieves a substantially vertical orientation at its juncture with the lower flange.  
     
     
         8 . The flashing system of  claim 2 , wherein the shaped transition area of each flashing strip is oriented substantially perpendicular to the upper flange and substantially perpendicular to the lower flange, being substantially planar and oriented substantially horizontally.  
     
     
         9 . The flashing system of  claim 2 , wherein the attachment component of each flashing strip comprises 
 a plurality of apertures formed into the upper flange of the flashing strip, and    a plurality of fasteners;    whereby the fasteners are passed through the apertures of the upper flange and into the wall substrate, thereby fixedly attaching the flashing strip to the wall substrate.    
     
     
         10 . The flashing system of  claim 2 , wherein the attachment component of each flashing strip comprises 
 an adhesive strip having a first side and a second side, with the first side being adhesive and the second side being adhesive,    whereby the first side of the adhesive strip is placed along and in contact with the interior surface of the upper flange of the flashing strip, thereby affixing the adhesive strip to the flashing strip, and    the flashing strip is pressed against the wall substrate so that the second side of the adhesive strip is placed in contact with the wall substrate, thereby fixedly attaching the flashing strip to the wall substrate.    
     
     
         11 . The flashing system of  claim 2 , wherein the attachment component of each flashing strip comprises 
 an adhesive compound,    whereby the adhesive compound is applied along the interior surface of the upper flange of the flashing strip and the upper flange of the flashing strip is pressed against the wall substrate such that the adhesive compound is in contact with and interposed between the upper flange of the flashing strip and the wall substrate, thereby fixedly attaching the flashing strip to the wall substrate.    
     
     
         12 . The flashing system of  claim 2 , further comprising a waterproofing compound, 
 whereby the waterproofing compound is placed along a top edge of base tile such that the waterproofing compound contacts base tile and the interior surface of the flashing strip, forming an unbroken seal between the flashing strip and base tile for the length of the flashing strip, and    the waterproofing compound is placed upon the exterior surface of the second end of the flashing strip such that the waterproofing compound contacts both the second end of the flashing strip and the interior surface of the first end of an adjacent flashing strip which overlaps the second end of the flashing strip, forming an unbroken seal between the two flashing strips,    thereby preventing moisture from passing between the flashing strip and base tile or between adjacent flashing strips through to the wall substrate.    
     
     
         13 . The flashing system of  claim 1 , wherein the inside corner sealing component comprises 
 one or more inside corner flashing members;    wherein each inside corner flashing member is constructed of a material impervious to moisture,    has an exterior surface and an interior surface, with the exterior surface being substantially concave,    has a substantially uniform thickness,    has a first upper flange which is substantially planar and oriented substantially vertically,    has a second upper flange which is substantially planar and oriented substantially vertically and positioned adjacent to and integrated with the first upper flange along a common edge oriented substantially vertically, with the first upper flange and the second upper flange forming an angle of more than 0° and less than 180°,    has a first lower flange with a first lower edge, with the first lower flange being substantially planar and oriented substantially vertically in a plane substantially parallel and exterior to the plane of the first upper flange,    has a second lower flange with a second lower edge, with the second lower flange being substantially planar and oriented substantially vertically in a plane substantially parallel and exterior to the plane of the second upper flange, and with the second lower flange positioned adjacent to and integrated with the first lower flange along a common edge oriented substantially vertically and with the first lower flange and the second lower flange forming an angle of more than 0° and less than 180°,    has a first shaped transition area integrated with and interposed between the first upper flange and the first lower flange,    has a second shaped transition area integrated with and interposed between the second upper flange and the second lower flange and positioned adjacent to and integrated with the first shaped transition area,    has an attachment component suitably adapted for attaching the inside corner flashing member to a wall, and    is of seamless once piece construction,    whereby the first lower flange of each inside corner flashing member is suitably adapted to partially overlap the second end of an adjacent flashing strip,    the second lower flange of each inside corner flashing member is suitably adapted to partially overlap the first end of an adjacent flashing strip,    each inside corner flashing member is suitably adapted to be positioned against an inside corner of a structure, the corner being formed by a first wall and an adjacent second wall, each wall having a wall substrate, a wall covering, and base tile located along the lower portion of that wall directly below and adjacent to the wall covering, such that the first upper flange of the inside corner flashing member is placed between the wall substrate and the wall covering of the first wall with the exterior surface of the first upper flange of the inside corner flashing member positioned against the wall covering of the first wall, and with the interior surface of the first upper flange of the inside corner flashing member positioned against the wall substrate of the first wall,    the second upper flange of the inside corner flashing member is placed between the wall substrate and the wall covering of the second wall with the exterior surface of the second upper flange of the inside corner flashing member positioned against the wall covering of the second wall, and with the interior surface of the second upper flange of the inside corner flashing member positioned against the wall substrate of the second wall,    the first lower flange of the inside corner flashing member is placed over base tile located along the first wall with the interior surface of the first lower flange of the inside corner flashing member positioned against said base tile, and    the second lower flange of the inside corner flashing member is placed over base tile located along the second wall with the interior surface of the second lower flange of the inside corner flashing member positioned against said base tile, such that the inside corner flashing member extends from and through the seams formed at the junctions of the wall coverings and base tile of the first wall and the second wall, such that moisture contacting the first wall or the second wall in the area of the inside corner flashing member is directed downward and away from said seams.    
     
     
         14 . The flashing system of  claim 13 , wherein the inside corner sealing component is constructed of a material resistant to chemical corrosion.  
     
     
         15 . The flashing system of  claim 13 , wherein the inside corner sealing component is constructed of a material selected from the group comprising aluminum, steel, stainless steel, fiberglass, rigid plastic, rubberized plastic, polymer matrix composites, metal matrix composites, ceramic matrix composites, laminate matrix composites, polycarbonate, and polystyrene.  
     
     
         16 . The flashing system of  claim 13 , wherein the first lower flange of each inside corner flashing member has a width greater than the width of each lower flange of the flashing strip at the second end of each flashing strip, the difference in width being substantially equal to the thickness of the flashing strip, and 
 the second lower flange of each inside corner flashing member has a width greater than the width of each lower flange of the flashing strip at the first end of each flashing strip, the difference in width being substantially equal to the thickness of the flashing strip.    
     
     
         17 . The flashing system of  claim 13 , wherein the first lower edge of the first lower flange of each inside corner flashing member is angled rearward, and the second lower edge of the second lower flange of each inside corner flashing member is angled rearward.  
     
     
         18 . The flashing system of  claim 13 , wherein the first shaped transition area of each inside corner flashing member is oriented substantially perpendicular to the first upper flange of the inside corner flashing member and extends outward and downward from the first upper flange of the inside corner flashing member in a smoothly curving manner until it achieves a substantially vertical orientation at its juncture with the first lower flange of the inside corner flashing member, and 
 the second shaped transition area of each inside corner flashing member is oriented substantially perpendicular to the second upper flange of the inside corner flashing member and extends outward and downward from the second upper flange of the inside corner flashing member in a smoothly curving manner until it achieves a substantially vertical orientation at its juncture with the second lower flange of the inside corner flashing member.    
     
     
         19 . The flashing system of  claim 13 , wherein the first shaped transition area of each inside corner flashing member is oriented substantially perpendicular to the first upper flange of the inside corner flashing member and substantially perpendicular to the first lower flange of the inside corner flashing member, said first shaped transition area being substantially planar and oriented substantially horizontally, and 
 the second shaped transition area of each inside corner flashing member is oriented substantially perpendicular to the second upper flange of the inside corner flashing member and substantially perpendicular to the second lower flange of the inside corner flashing member, said second shaped transition area being substantially planar and oriented substantially horizontally.    
     
     
         20 . The flashing system of  claim 13 , wherein the attachment component of each inside corner flashing member comprises 
 one or more apertures formed into the first upper flange of the inside corner flashing member and into the second upper flange of the inside corner flashing member, and    a plurality of fasteners;    whereby the fasteners are passed through the apertures of the first upper flange of the inside corner flashing member and the second upper flange of the inside corner flashing member and into the wall substrate, thereby fixedly attaching the inside corner flashing member to the wall substrate.    
     
     
         21 . The flashing system of  claim 13 , wherein the attachment component of each inside corner flashing member comprises 
 a first adhesive strip having a first side and a second side, with the first side being adhesive and the second side being adhesive, and    a second adhesive strip having a first side and a second side, with the first side being adhesive and the second side being adhesive,    whereby the first side of the first adhesive strip is placed along and in contact with the interior surface of the first upper flange of the inside corner flashing member, thereby affixing the first adhesive strip to the inside corner flashing member,    the first side of the second adhesive strip is placed along and in contact with the interior surface of the second upper flange of the inside corner flashing member, thereby affixing the second adhesive strip to the inside corner flashing member, and    the inside corner flashing member is pressed into a corner against the wall substrate so that the second side of the first adhesive strip is placed in contact with the wall substrate and the second side of the second adhesive strip is placed in contact with the wall substrate, thereby fixedly attaching the inside corner flashing member to the wall substrate.    
     
     
         22 . The flashing system of  claim 13 , wherein the attaching component of each inside corner flashing member comprises 
 an adhesive compound,    whereby the adhesive compound is applied along the interior surface of the first upper flange of the inside corner flashing member and the adhesive compound is applied along the interior surface of the second upper flange of the inside corner flashing member, and    the inside corner flashing member is pressed into a corner against the wall substrate such that the adhesive compound is in contact with and interposed between the inside corner flashing member and the wall substrate, thereby fixedly attaching the inside corner flashing member to the wall substrate.    
     
     
         23 . The flashing system of  claim 13 , further comprising a waterproofing compound, 
 whereby the waterproofing compound is placed along the exterior surface of the shaped transition area of each flashing strip positioned adjacent to the inside corner flashing member, such that the waterproofing compound contacts the exterior surface of the shaped transition area of the flashing strips and the interior surface of the inside corner flashing member, and    the waterproofing compound is placed between the overlapping flanges of the inside corner flashing member and the ends of the adjacent flashing strips,    thereby forming an unbroken seal between the inside corner flashing member and the flashing strips, preventing moisture from passing between the inside corner flashing member and the flashing strips.    
     
     
         24 . The flashing system of  claim 1 , wherein the outside corner sealing component comprises 
 one or more outside corner flashing members;    wherein each outside corner flashing member is constructed of a material impervious to moisture,    has an exterior surface and an interior surface, with the exterior surface being substantially convex,    has a substantially uniform thickness,    has a first upper flange which is substantially planar and oriented substantially vertically,    has a second upper flange which is substantially planar and oriented substantially vertically and positioned adjacent to and integrated with the first upper flange along a common edge oriented substantially vertically, with the first upper flange and the second upper flange forming an angle of more than 180° and less than 360°,    has a first lower flange with a first lower edge, with the first lower flange being substantially planar and oriented substantially vertically in a plane substantially parallel and exterior to the plane of the first upper flange,    has a second lower flange with a second lower edge, with the second lower flange being substantially planar and oriented substantially vertically in a plane substantially parallel and exterior to the plane of the second upper flange, and with the second lower flange positioned adjacent to and integrated with the first lower flange along a common edge oriented substantially vertically and with the first upper flange and the second upper flange forming an angle of more than 180° and less than 360°,    has a first shaped transition area integrated with and interposed between the first upper flange and the first lower flange,    has a second shaped transition area integrated with and interposed between the second upper flange and the second lower flange and positioned adjacent to and integrated with the first shaped transition area,    has an attachment component suitably adapted for attaching the outside corner flashing member to a wall, and    is of seamless once piece construction,    whereby the first lower flange of each outside corner flashing member is suitably adapted to partially overlap the second end of an adjacent flashing strip,    the second lower flange of each outside corner flashing member is suitably adapted to partially overlap the first end of an adjacent flashing strip,    each outside corner flashing member is suitably adapted to be positioned against an outside corner formed by a first wall and an adjacent second wall, each wall having a wall substrate, a wall covering, and base tile located along the lower portion of that wall directly below and adjacent to the wall covering, such that the first upper flange of the outside corner flashing member is placed between the wall substrate and the wall covering of the first wall with the exterior surface of the first upper flange of the outside corner flashing member positioned against the wall covering of the first wall, and with the interior surface of the first upper flange of the outside corner flashing member positioned against the wall substrate of the first wall,    the second upper flange of the outside corner flashing member is placed between the wall substrate and the wall covering of the second wall with the exterior surface of the second upper flange of the outside corner flashing member positioned against the wall covering of the second wall, and with the interior surface of the second upper flange of the outside corner flashing member positioned against the wall substrate of the second wall,    the first lower flange of the outside corner flashing member is placed over base tile located along the first wall with the interior surface of the first lower flange of the outside corner flashing member positioned against said base tile, and    the second lower flange of the outside corner flashing member is placed over base tile located along the second wall with the interior surface of the second lower flange of the outside corner flashing member positioned against said base tile, such that the outside corner flashing member extends from and through the seams formed at the junctions of the wall coverings and base tile of the first wall and the second wall, such that moisture contacting the first wall or the second wall in the area of the outside corner flashing member is directed downward and away from said seams.    
     
     
         25 . The flashing system of  claim 24 , wherein the outside corner sealing component is constructed of a material resistant to chemical corrosion.  
     
     
         26 . The flashing system of  claim 24 , wherein the outside corner sealing component is constructed of a material selected from the group comprising aluminum, steel, stainless steel, fiberglass, rigid plastic, rubberized plastic, polymer matrix composites, metal matrix composites, ceramic matrix composites, laminate matrix composites, polycarbonate, and polystyrene.  
     
     
         27 . The flashing system of  claim 24 , wherein the first lower flange of each outside corner flashing member has a width greater than the width of each lower flange of the flashing strip at the second end of each flashing strip, the difference in width being substantially equal to the thickness of the flashing strip, and 
 the second lower flange of each outside corner flashing member has a width greater than the width of each lower flange of the flashing strip at the first end of each flashing strip, the difference in width being substantially equal to the thickness of the flashing strip.    
     
     
         28 . The flashing system of  claim 24 , wherein the first lower edge of the first lower flange of each outside corner flashing member is angled rearward, and 
 the second lower edge of the second lower flange of each outside corner flashing member is angled rearward.    
     
     
         29 . The flashing system of  claim 24 , wherein the first shaped transition area of each outside corner flashing member is oriented substantially perpendicular to the first upper flange of the outside corner flashing member and extends outward and downward from the first upper flange of the outside corner flashing member in a smoothly curving manner until it achieves a substantially vertical orientation at its juncture with the first lower flange of the outside corner flashing member, and 
 the second shaped transition area of each outside corner flashing member is oriented substantially perpendicular to the second upper flange of the outside corner flashing member and extends outward and downward from the second upper flange of the outside corner flashing member in a smoothly curving manner until it achieves a substantially vertical orientation at its juncture with the second lower flange of the outside corner flashing member.    
     
     
         30 . The flashing system of  claim 24 , wherein the first shaped transition area of each outside corner flashing member is oriented substantially perpendicular to the first upper flange of the outside corner flashing member and substantially perpendicular to the first lower flange of the outside corner flashing member, said first shaped transition area being substantially planar and oriented substantially horizontally, and 
 the second shaped transition area of each outside corner flashing member is oriented substantially perpendicular to the second upper flange of the outside corner flashing member and substantially perpendicular to the second lower flange of the outside corner flashing member, said second shaped transition area being substantially planar and oriented substantially horizontally.    
     
     
         31 . The flashing system of  claim 24 , wherein the attachment component each outside corner flashing member comprises 
 one or more apertures formed into the first upper flange of the outside corner flashing member and into the second upper flange of the outside corner flashing member, and    a plurality of fasteners;    whereby the fasteners are passed through the apertures of the first upper flange of the outside corner flashing member and the second upper flange of the outside corner flashing member and into the wall substrate, thereby fixedly attaching the outside corner flashing member to the wall substrate.    
     
     
         32 . The flashing system of  claim 24 , wherein the attachment component of each outside corner flashing member wall comprises 
 a first adhesive strip having a first side and a second side, with the first side being adhesive and the second side being adhesive, and    a second adhesive strip having a first side and a second side, with the first side being adhesive and the second side being adhesive,    whereby the first side of the first adhesive strip is placed along and in contact with the interior surface of the first upper flange of the outside corner flashing member, thereby affixing the first adhesive strip to the outside corner flashing member,    the first side of the second adhesive strip is placed along and in contact with the interior surface of the second upper flange of the outside corner flashing member, thereby affixing the second adhesive strip to the outside corner flashing member, and    the outside corner flashing member is placed over a corner against the wall substrate so that the second side of the first adhesive strip is placed in contact with the wall substrate and the second side of the second adhesive strip is placed in contact with the wall substrate, thereby fixedly attaching the outside corner flashing member to the wall substrate.    
     
     
         33 . The flashing system of  claim 24 , wherein the attachment component of each outside corner flashing member comprises 
 an adhesive compound,    whereby the adhesive compound is applied along the interior surface of the first upper flange of the outside corner flashing member and the adhesive compound is applied along the interior surface of the second upper flange of the outside corner flashing member, and    the outside corner flashing member is placed over a corner against the wall substrate such that the adhesive compound is in contact with and interposed between the outside corner flashing member and the wall substrate, thereby fixedly attaching the outside corner flashing member to the wall substrate.    
     
     
         34 . The flashing system of  claim 24 , further comprising a waterproofing compound, 
 whereby the waterproofing compound is placed along the exterior surface of the shaped transition area of each flashing strip positioned adjacent to the outside corner flashing member, such that the waterproofing compound contacts the exterior surface of the shaped transition area of the flashing strips and the interior surface of the outside corner flashing member, and    the waterproofing compound is placed between the overlapping flanges of the outside corner flashing member and the ends of the adjacent flashing strips,    thereby forming an unbroken seal between the outside corner flashing member and the flashing strips, preventing moisture from passing between the inside corner flashing member and the flashing strips.    
     
     
         35 . A method of rendering seams in a structure impervious to moisture, said structure comprising an interior room having walls, each said wall having a wall substrate, a wall covering, and base tile located along the lower portion of the wall directly below and adjacent to the wall covering, and said seams being formed at the junctions of the wall covering and base tile, said method comprising the steps of: 
 (1) preparing the room by removing the wall covering from the walls, if necessary, and having the wall substrate and base tile in place,    (2) for each wall of the room, providing one or more flashing strips,    wherein each flashing strip is constructed of a material impervious to moisture,    has an exterior surface and an interior surface,    has a first end and a second end,    has an upper flange oriented substantially vertically,    has a lower flange, with the lower flange oriented substantially vertically in a plane substantially parallel and exterior to the plane of the upper flange, and    has a shaped transition area integrated with and interposed between the upper flange and the lower flange, p 1  (3) for each wall of the room, positioning a first flashing strip horizontally against the wall such that the first end of the flashing strip is adjacent to one corner of the room,    (4) placing the upper flange of the flashing strip against the wall substrate with the interior surface of the upper flange positioned against the wall substrate, such that the lower flange is positioned over base tile with the interior surface of the lower flange positioned against base tile,    (5) fixedly attaching the upper flange of the flashing strip to the wall substrate,    (6) for each subsequent flashing strip, positioning the flashing strip horizontally against the wall such that the first end of the flashing strip overlaps the second end of the previously installed flashing strip, and repeating steps (4) and (5),    (7) positioning a final flashing strip horizontally against the wall such that the first end of the final flashing strip overlaps the second end of the previously installed flashing strip and the second end of the final flashing strip is adjacent to the corner of the room, cutting the final flashing strip, if necessary, with a vertical cut through the upper flange, shaped transition area, and lower flange, in order to fit the remaining length of the wall, and repeating steps (4) and (5),    (8) for each interior corner of the room, providing an inside corner flashing member,    wherein each inside corner flashing member is constructed of a material impervious to moisture,    has an exterior surface and an interior surface, with the exterior surface being substantially concave,    has a first upper flange oriented substantially vertically,    has a second upper flange oriented substantially vertically and positioned adjacent to and integrated with the first upper flange,    has a first lower flange with a first lower edge, with the first lower flange oriented substantially vertically in a plane substantially parallel and exterior to the plane of the first upper flange,    has a second lower flange with a second lower edge, with the second lower flange oriented substantially vertically in a plane substantially parallel and exterior to the plane of the second upper flange, and with the second lower flange positioned adjacent to and integrated with the first lower flange,    has a first shaped transition area integrated with and interposed between the first upper flange and the first lower flange,    has a second shaped transition area integrated with and interposed between the second upper flange and the second lower flange and positioned adjacent to and integrated with the first shaped transition area,    (9) for each interior corner of the room, positioning an inside corner flashing member against the interior corner, such that the first upper flange of the inside corner flashing member is placed against the wall substrate with the interior surface of the first upper flange positioned against the wall substrate,    the second upper flange of the inside corner flashing member is placed against the wall substrate with the interior surface of the second upper flange positioned against the wall substrate,    the first lower flange of the inside corner flashing member is positioned over base tile with the interior surface of the first lower flange positioned against base tile, and with the first lower flange positioned to partially overlap the second end of an adjacent flashing strip,    the second lower flange of the inside corner flashing member is positioned over base tile with the interior surface of the second lower flange positioned against base tile, and with the second lower flange positioned to partially overlap the first end of an adjacent flashing strip, and    fixedly attaching the first upper flange of the inside corner flashing member to the wall substrate and fixedly attaching the second upper flange of the inside corner flashing member to the wall substrate,    (10) for each outside corner of the room, providing an outside corner flashing member,    wherein each outside corner flashing member is constructed of a material impervious to moisture,    has an exterior surface and an interior surface, with the exterior surface being substantially convex,    has a first upper flange oriented substantially vertically,    has a second upper flange oriented substantially vertically and positioned adjacent to integrated with the first upper flange,    has a first lower flange with a first lower edge, with the first lower flange oriented substantially vertically in a plane substantially parallel and exterior to the plane of the first upper flange,    has a second lower flange with a second lower edge, with the second lower flange oriented substantially vertically in a plane substantially parallel and exterior to the plane of the second upper flange, and with the second lower flange positioned adjacent to and integrated with the first lower flange,    has a first shaped transition area integrated with and interposed between the first upper flange and the first lower flange,    has a second shaped transition area integrated with and interposed between the second upper flange and the second lower flange and positioned adjacent to and integrated with the first shaped transition area,    (11) for each outside corner of the room, placing an outside corner flashing member over the outside corner, such that the first upper flange of the outside corner flashing member is placed against the wall substrate with the interior surface of the-first upper flange positioned against the wall substrate,    the second upper flange of the outside corner flashing member is placed against the wall substrate with the interior surface of the second upper flange positioned against the wall substrate,    the first lower flange of the outside corner flashing member is positioned over base tile with the interior surface of the first lower flange positioned against base tile, and with the first lower flange positioned to partially overlap the second end of an adjacent flashing strip,    the second lower flange of the outside corner flashing member is positioned over base tile with the interior surface of the second lower flange positioned against base tile, and with the second lower flange positioned to partially overlap the first end of an adjacent flashing strip, and    fixedly attaching the first upper flange of the outside corner flashing member to the wall substrate and fixedly attaching the second upper flange of the outside corner flashing member to the wall substrate, and    (12) positioning the wall covering onto the wall substrate, such that the wall covering overlaps all upper flanges of the flashing strips, inside corner flashing members, and outside corner flashing members, and is adjacent to all shaped transition areas of the flashing strips, inside corner flashing members, and outside corner flashing members.    
     
     
         36 . The method of  claim 35  wherein an additional step is performed between steps (1) and (2) as follows: 
 a waterproofing compound is placed along a top edge of base tile, such that the waterproofing compound contacts base tile and the interior surface of the flashing strips after same are positioned as described in step (4), and  
 the waterproofing compound is placed between the overlapping ends of adjacent flashing strips,  
 thereby forming an unbroken seal impervious to moisture between base tile and the flashing system.  
 
     
     
         37 . The method of  claim 35  wherein an additional step is performed between steps (8) and (9) as follows: 
 for each interior corner of the room, the waterproofing compound is placed upon the portions of the exterior surfaces of the shaped transition areas of the adjacent flashing strips which are to be overlapped by the inside corner flashing member, and  
 the waterproofing compound is placed between the overlapping flanges of the inside corner flashing member and the ends of the adjacent flashing strips,  
 such that the waterproofing compound contacts the exterior surfaces of the adjacent flashing strips and the interior surface of the inside corner flashing members after same are positioned as described in step (9), thereby forming an unbroken seal impervious to moisture between the flashing strips and the inside corner flashing members.  
 
     
     
         38 . The method of  claim 35  wherein an additional step is performed between steps (10) and (11) as follows: 
 for each outside corner of the room, the waterproofing compound is placed upon the portions of the exterior surfaces of the shaped transition areas of the adjacent flashing strips which are to be overlapped-by the-outside corner flashing member, and  
 the waterproofing compound is placed between the overlapping flanges of the outside corner flashing member and the ends of the adjacent flashing strips,  
 such that the waterproofing compound contacts the exterior surfaces of the adjacent flashing strips and the interior surface of the outside corner flashing members after same are positioned as described in step (11), thereby forming an unbroken seal impervious to moisture between the flashing strips and the outside corner flashing members.