Abstract: A combination through-wall masonry flashing and drainage device has a flashing membrane made of stainless steel sheet and a reinforcing cloth affixed to a first side of the flashing membrane. The flashing membrane has a thickness between 0.001 and 0.007 inch. When installed between an inner wall and an outer wall, water between the inner wall and outer wall is diverted to the outside of the outer wall by the through-wall masonry flashing and drainage device.

Abstract: An outside corner patch for TPO roofing is formed from a circular piece of TPO membrane material being vacuum formed to define an array of flutes that extend from the center of the piece toward its edges. The flutes form ridges and valleys that generally are shaped as conical sections with the apex of the conical sections located at the center of the patch. The number and size of the flutes is optimized in such a way that, when the flutes are stretched flat, the patch conforms to and fits flat against the surfaces of an outside corner formed by the intersection of a roof deck with an upward protrusion from the roof. The TPO outside corner patch is applied over the corner and thermally welded to surrounding TPO membranes on the roof deck and the protrusion to form a watertight seal at the outside corner.

Abstract: A ceiling drainage system disposed beneath an outdoor deck wherein the deck includes a frame structure supporting multiple parallel deck floor panels and the drainage system includes a U-shaped frame structure secured to the deck frame with multiple interlocking drain trays having one end secured to the drainage system U-shaped frame structure, a gutter extending between the free ends of the U-shaped frame structure, and the opposite ends of the drain trays interlocked with the gutter.

Abstract: A combination through-wall masonry flashing/drainage device having a flashing membrane with at least one reinforcing cloth adhered to at least one side of the flashing membrane. A wicking cloth made of a synthetic wicking material is then adhered to the device. The wicking cloth material is selected for wicking ability, life expectancy, mildew resistance, and strength characteristics.

Abstract: A roof mounting system can include a roof substrate and flashing supportable on the substrate and including an outwardly extending projection having a concave interior side and an aperture extending through the projection between top and bottom surfaces of the flashing. A seal can extend through the aperture and contact at least a portion of the top surface and at least a portion of the bottom surface. The seal can be conformable with the concave interior side and can define a seal aperture substantially aligned with the flashing aperture. A mounting bracket can be supportable on the flashing and can define an aperture sized to receive at least a portion of each of the seal and the projection. A fastener can extend through the mounting bracket aperture, seal aperture, and flashing aperture to inhibit fluid flow through the flashing aperture.

Abstract: An exterior siding mounting bracket used in conjunction with siding placed over sheathing of an exterior wall has a base member having a base flange fastened to the sheathing. A wall arrangement projects laterally outward from the base flange and away from the sheathing. A trim member of the bracket has a partition arrangement that preferably snap fits to the wall arrangement and a trim flange constructed and arranged to cover cut edges of the siding that cover in-part the base flange. Integrated at least into the trim member is a water diversion device that diverts water away from the base flange and sheathing. Preferably, the water diversion device has an elongated trough supported by the trim member and projecting laterally inward from the trim flange and toward the base flange and above the wall and partition arrangements.

Abstract: A barrier assembly for sealing the gap between the frame of a window and the rough opening of a building in which the window is received comprises an adaptor attached to the window frame and a sealing membrane providing an air and moisture barrier between the window frame and the framing members defining the building's rough opening. The flexible sealing membrane is formed from multiple membrane sections, at least one of which is formed from a flexible sheet and a projection integral with the flexible sheet, the projection being received in a channel defined by the adaptor to provide an air and moisture-proof barrier seal between the window frame and the associated building framing members.

Abstract: A system and method for providing a deck drain vent system is disclosed. The deck drain vent system includes at least one panel disposed below a lower surface of a deck. The panel is substantially planar and has a bottom side and a top side facing and spaced apart from the lower surface. At least one vent penetrates the panel to allow fluid communication between the cavity and the bottom side. The deck drain vent system further includes a shaft lock secured to the vent. The shaft lock hinders liquids and debris from entering the vent, yet allows air to freely circulate between the cavity and a surrounding atmosphere.

Abstract: A wall assembly includes a wall frame, a trough, a moisture transport spacer coupled to the wall frame and providing a substantial barrier to the passage of air and moisture vapor through the wall assembly, a moisture wicking sheet disposed at a bottom of the wall frame and extending from the moisture transport spacer to the trough, and an air seal disposed between the moisture wicking sheet and the bottom of the wall frame. The trough communicates with a dynamic ventilation system configured to remove moisture collected in the trough.

Abstract: A moisture management system for use in construction of buildings, particularly for partially covering the framework of a rough opening in a structure. The system has a body having a plurality of pathways to facilitate fluid between the system and any fixture installed adjacent to the system. The pathways allow fluid, especially water, to flow away from the installation surfaces and down along the exterior of the building.

Abstract: A water-shedding flashing for use in a cavity wall is disclosed. The flashing includes a modified textured surface with a super-hydrophobic layer that achieves water contact angles between 120 degrees and 165 degrees. Water and water vapor do not adhere to the flashing, causing the water to bead and fall from the flashing. Such combination results in a flashing that works in conjunction with the exterior channels in the outer wythe to produce an efficient water removal and ventilation system within the cavity wall structure. A labor-saving peel-and-stick adhesive with release sheet for installation on the inner wythe utilizes clear, nondrooling adhesives.

Abstract: A weep screed includes a mounting flange, a moisture collector carried by the mounting flange and a moisture dissipation element carried on the moisture collector. The weep screed is characterized by the moisture collector being recessed relative to the moisture dissipation element so as to provide a space adjacent the moisture dissipation element for receiving exterior wall construction materials overlying an exterior wall construction material backing portion of the moisture collector.

Abstract: A masonry flashing for use in a cavity wall is disclosed. The flashing has channels for draining water from the cavity while permitting entry of air into the cavity. The top surface of the flashing is covered by a protective member. The protective member is a scrim or, in the extruded form, an overarching portion of the flashing material. The protective member prevents the clogging of channels from mortar droppings and other construction debris. The flashing is shown with a drip edge is formed by extending the flashing beyond the external surface of the outer wythe and, with the edge being foil lined, manually forming the drip edge. A peel-and-stick embodiment described herein utilizes clear, nondrooling adhesives. Flashing accessories, namely, an end dam, an inside corner and an outside corner are also described.

Abstract: A water deviation unit for external wall features comprises a frame shaped plate adaptable to be attached to a sheathing of a composite external wall and a box like subassembly projecting outwardly from and connecting to the frame shaped plate and provided centrally with a relatively large aperture. The box like subassembly includes: 1) a pair of spaced apart walls extending outwardly and perpendicularly in vertical planes from adjacent sides of said relatively large aperture and continuing above the latter; 2) upper and lower means for inclining used to deflect outwardly the water and connected laterally respectively at a top and a bottom of the pair of spaced apart walls; and 3) means for controlling an entrance and a withdrawal from an interior of the composite external, disposed between and joining the spaced apart walls.

Abstract: A multidirectional mounting bracket assembly is utilized in conjunction with exterior siding that covers sheathing of an exterior wall. The assembly has trim member that press fits to a base member along an axis disposed perpendicular to the exterior wall. The base member has a mounting flange secured to the sheathing and circumferentially continuous inner and outer walls disposed co-axially to one another and laterally projecting axially. The trim member has a facial plate disposed substantially perpendicular to the axis and a mating wall that press fits between the inner and outer walls. The outer wall carries a plurality of channeling features for cascading water on top of the mating wall. The mating wall generally carries a dam flange and preferably end dams for diverting water through weep holes in the facial plate.

Abstract: A combination through-wall masonry flashing/drainage device having a flashing membrane with at least one reinforcing cloth adhered to at least one side of the flashing membrane. A wicking cloth made of a synthetic wicking material is then adhered to the device. The wicking cloth material is selected for wicking ability, life expectancy, mildew resistance, and strength characteristics.

Abstract: A structural support member for use in a roof deck system that is supported on an upper surface of a roof deck support structure. The primary embodiment comprises a substantially vertical outer segment, a substantially horizontal lower segment connected to the outer segment, a substantially horizontal upper segment connected to the outer segment, a substantially horizontal intermediate segment connected to the outer segment between the upper and lower segments, and a substantially vertical inner segment connected to the intermediate segment and the lower segment. The lower segment is secured to the upper surface of the support structure and supports a metal deck. The upper, intermediate, and outer segments form a C-shaped cavity for receiving the end of a barrier material, such as insulation or concrete, which is supported on the metal deck. The lower, intermediate, inner, and outer segments form an elongated channel that preferably has a plurality of vent holes therethrough.

Abstract: The disclosure provides a self adhesive, flexible tape for flashing exterior wall openings. The tape is a composite comprising a barrier layer having an exterior surface and an interior surface and an adhesive layer overlying the interior surface. The barrier layer exterior surface is patterned to provide a gravity drainage path in both the tape machine direction (MD) and tape cross machine direction (CD).

Abstract: A drain support plate for mounting and securing a drain assembly to a deck in a building structure.

Abstract: An exterior wall assembly includes a wall frame supporting an interior wall layer and an exterior wall layer opposite the interior wall layer, a flexible sheet disposed within the exterior wall assembly, and a seal attached to the flexible sheet and configured to prevent ingress of water toward the wall frame. The flexible sheet is configured to transport moisture from between the interior wall layer and the exterior wall layer to a location outside of the exterior wall assembly.

Abstract: Drainage under a deck can be performed by a structure that includes hanging components and corrugated panels. For example, a hanging component can have connected first and second portions, with the first portion being connected to hang from one of the joists and extending downward to where it connects to the second portion, which is below the joist. The second portion can be connected to support of at least one of the panels from above. The upper surfaces of panels are sloped so that drainage occurs from a high part to a low part. The direction of slope and the direction of corrugations are not perpendicular, and can be approximately the same. The hanging components can, for example, be L-shaped brackets, U-shaped, or inverted T-shaped, and can be integrally formed by extrusion of plastic or can be metal. The panels can be corrugated plastic or metal sheets.

Abstract: A roof drain sump box (10) is utilized for positioning a roof drain (12) on a flat roof. The sump box is formed with a horizontally oriented flat plate (20) with a central opening (22) making a peripheral flange (24). The central opening has a width less than a distance between building roof joists providing attachment of the sump box onto the flat roof top of a building without altering the building structure. An angular transition portion (46) is integrally formed with the flange contiguous with the central opening. A vertically oriented downwardly depending step (48) is formed integrally with the angular transition portion and a horizontally oriented flat sump deck (50) is integrally formed with the step. The sump deck, is coplanar with the flange, and incorporates a roof drain opening (52) to receive the roof drain (12). The sump deck is positioned sufficiently below the flat plate permitting water to flow uninhibited into the roof drain without ponding.

Abstract: A combination through-wall masonry flashing/drainage device having a flashing membrane with at least one reinforcing cloth adhered to at least one side of the flashing membrane. A wicking cloth made of a synthetic wicking material is then adhered to the device. The wicking cloth material is selected for wicking ability, life expectancy, mildew resistance, and strength characteristics.

Abstract: The present system and method enables water entering a dwelling or structure to be contained and removed, while preventing evaporation of the water into the interior of the dwelling. Embodiments of the present invention can comprise a waterproofing system comprising a waterproofing form, affixable to a first surface of a wall at a mounting angle, and comprising a vapor barrier retainer for detachably affixing a vapor barrier to the waterproofing form, and a gutter channel, disposed at a pitch angle, and in fluid communication with the first surface of the wall, the vapor barrier, and a collection area, where the pitch angle and the mounting angle are the same angle, and where the pitch angle causes the water to flow through the gutter channel to the collection area for removal.

Abstract: A masonry flashing is disclosed having a polymeric membrane and a pressure-activated adhesive in a peel-and-stick product. The flashing is used in cavity walls, typically a wall with an inner wythe of masonry block and an outer wythe of brick. The adhesive layer is a hot melt with various additives, which additives provide reinforcement to the flashing structure. The reinforcement can be fiber glass or filamentous fragments of polypropylene that are admixed into the adhesive. The flashing has a release sheet and, after removal thereof, the adhesive is pressed against the rough surface of the masonry block creating a durable bond with the inner wythe. Incorporated into the masonry flashing are various high-strength, polymeric webs including a spun-bonded polyolefin, an ethylene propylene diene terpolymer, and a polyvinylchloride with an ethylene interpolymer.

Abstract: A flashing assembly includes a member extending between a first end and a second end. The flashing member includes a top portion and a flange at an angle to the top portion. The top portion extends from a rear edge to the flange. The top portion includes a mounting surface substantially level from the top portion rear edge toward the flange. The top portion includes at least one channel and at least one cross channel in communication with the channel. In one option, the cross channel is separated from the coupling portion. The channels facilitate trimming of members to desired sizes such that the assembly is used with windows and doors of various sizes.

Abstract: A roof mounting system can include a roof substrate and flashing supportable on the substrate and including an outwardly extending projection having a concave interior side and an aperture extending through the projection between top and bottom surfaces of the flashing. A seal can extend through the aperture and contact at least a portion of the top surface and at least a portion of the bottom surface. The seal can be conformable with the concave interior side and can define a seal aperture substantially aligned with the flashing aperture. A mounting bracket can be supportable on the flashing and can define an aperture sized to receive at least a portion of each of the seal and the projection. A fastener can extend through the mounting bracket aperture, seal aperture, and flashing aperture to inhibit fluid flow through the flashing aperture.

Abstract: A water seepage control device having a wall panel positioned vertically against the interior of a foundation wall, a base member extending horizontally from the bottom of the wall panel over a foundation footing, such base member having a plurality of elongated V-shaped formations formed therein extending downward with the points of such V-shaped formations resting on the top of the foundation footing to form a plurality of drain channels therebetween under the base member for directing water, coming down and through the interior foundation wall, through the drain channels and over the end of the foundation footing to a water-collecting area.

Abstract: An L-shaped water seepage control device having a wall panel positioned vertically against the interior of a foundation wall and a base member extending horizontally from the bottom of the wall panel over a foundation footing, such wall panel and base member having a plurality of elongated U-shaped formations extending inwardly downward along the wall panel and horizontally along the base member with the bottoms of such U-shaped formations positioned against the foundation wall and resting on the top of the foundation footing and forming a plurality of drain channels therebetween for directing water passing down and through the interior foundation wall to pass through the drain channels and over the end of the foundation footing to a water-collecting area.

Abstract: A waterproofing flashing and resulting juncture, comprising in a first embodiment a generally horizontally positioned planar member which is positioned in sandwiched engagement between the upper peripheral edge of a shower pan or shower bench sidewall (or equivalent wallboard) and a lower peripheral edge of adjacent wallboard (or equivalent shower bench, shelf or ledge), and a vertically extending member attached to a distal edge of the horizontal member extending vertically upwardly behind the wallboard (or equivalent shower bench, shelf or ledge). An alternative form of the invention comprises a T-shaped flashing member comprised of a mid-section to which are connected first and second attachment members or wings, the wings adapted to connect the flashing to the room-facing side of the wallboard and/or shower module sections.

Abstract: A weep hole screen and method for installing the same in the exterior wall of a masonry building in order to prevent small animals such as insects and rodents from entering the building through the weep hole. A weep hole screen in accordance with the present invention preferably comprises a rectangular mesh screen with an angle bracket attached to each end. The weep hole screen is sized such that the angle brackets sandwich the bricks that form the weep hole, preferably on the interior faces of the bricks. The interfaces between the weep hole screen and the bricks are preferably sealed with mortar or another suitable sealant. The weep hole screen may be installed easily during original construction of the wall without the need for any mechanical fasteners.

Abstract: A nonmetallic masonry flashing is disclosed. The flashing includes a laminate that is applicable to cavity walls and particularly masonry block walls. The flashing has an adhesive layer which is a pressure activated, hot melt adhesive with various additives. The additives provide reinforcement to the entire structure and uses fiber glass or filamentous fragments of polypropylene. These additives are admixed into the hot melt adhesive. The nonmetallic masonry flashing employs peel-and-stick technology. After removal of a release sheet, the adhesive layer is pressed against the rough surface of the masonry block. The pressure activation creates a durable bond with the masonry block. Incorporated into the nonmetallic masonry flashing are various high-strength, polymeric laminates. The high-strength of the polymeric laminates is derived from advances in cross-lamination and laminates having a scrim as a core component.

Abstract: A mullion sealing bridge and method for use in a curtain wall system. In one aspect, the bridge is placed at an intersection horizontal and vertical mullions to divert fluid along the curtain wall system. This Abstract is provided to comply with rules requiring an Abstract that allows a searcher or other reader to quickly ascertain subject matter of the technical disclosure. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A drainage tile used on a footing of a foundation to promote drainage of water along the footing and away from a foundation wall. The drainage tile comes in lengths that are less than the length of the footing. The drainage tile can be secured together with other drainage tiles to span the length of the footing.

Abstract: The present invention relates particularly to photovoltaic systems for use in photovoltaically generating electrical energy. One aspect of the invention is a photovoltaic roofing system disposed on a roof deck.

Abstract: An exterior siding mounting bracket assembly used in conjunction with siding placed over sheathing of an exterior wall has a base member having a mounting flange fastened to the sheathing and a water diversion fitting also fastened to the sheathing and flashed in-part beneath the lower end of the mounting flange. A wall arrangement projects laterally outward from the mounting flange and away from the sheathing. A trim member of the bracket assembly has a partition arrangement that preferably snap fits to the wall arrangement and a trim flange constructed and arranged to substantially cover the water diversion fitting and the cut edges of the siding that cover in-part the mounting flange. Preferably, the water diversion fitting has an elongated drip edge spaced outwardly from the siding to shed water collected from generally cascaded from the mounting flange and outward from the siding.

Abstract: A window corner flashing device includes a first and a second member. The first member includes a first section which is disposed adjacent a second section and is angled thereto. The first section and second section have a first edge and second edge, respectively, wherein the first member includes a first continuous flange disposed along the first and second edges of the first and second sections, respectively. The second member includes a first section having a third edge and a second section having a fourth edge. The second member further includes a first continuous mating edge which is disposed along the third and the fourth edge thereof. The first member is affixed to the second member by having the first continuous flange permanently affixed to the first continuous mating edge.

Abstract: Insulation spacer devices, methods and related construction techniques are provided. An exemplary device may include a body having a plurality of openings defining an openwork, to allow the passage of air therethrough when placed in contact with insulation material. The device may further include a plurality of spacer struts and/or spacing depressions fixedly attached to the body. The struts may be configured to maintain a predetermined distance between a first side of the insulation material and a building surface. The body and struts act together to define and maintain a space between the first side of the insulation material and the building surface, for example, for ventilation. The building surface can be the bottom face of a roof, an insulated attic floor, wall sheathing or a soundproofed demising wall, for example. The spacer device can be capable of being transported and stored together with, or as a separate item from, the insulation material, and can also be stored in nested layers.

Abstract: A flashing apparatus for external use on structures is described. The flashing apparatus essentially serves as an accessory for fiber cement siding and is designed to provide a certain level of water resistance in the seams between the ends of the sections of the siding. The flashing apparatus has a forward projecting flange and comes in various heights to accommodate different sizes of fiber cement siding that may be used in constructing a structure.

Abstract: A soffit and fascia system for use on an exterior of a building that includes a soffit member, a soffit flashing, a fascia member, and a fascia flashing. The soffit flashing is adapted to be secured to an exterior of the building and to retain the rear portion of the soffit member in a desired configuration with concealed fasteners. The fascia flashing may be adapted to be coupled to the fascia member in the lower portion thereof and adapted to at least partially retain the forward portion of the soffit member in the desired configuration. The soffit member may include two or more soffit segments. The soffit member may further include at least one soffit joint adapted to be disposed between a first soffit segment and a second soffit segment and to couple the first and second soffit segments together.

Abstract: A sill flashing and method for installing a window or other portal in a wall opening are provided. The flashing includes a sill portion, at least one jamb portion at an angle relative to the sill portion, and a front face plate. The flashing is configured to be disposed in the opening with the sill portion disposed against a sill of the opening, an outer surface of the jamb portion disposed against one of the jambs of the opening, and a front face plate at an outer surface of the wall. The sill portion defines a plurality of support portions and a rear dam which can support the portal in the opening. The sill portion also includes one or more integral housing, configured to overlap an adjacent support portion when the flashing is cut and disposed multiple parts defining an interface therebetween.

Abstract: A weatherproofing backer for installing windows and doors is described as having a foam layer and an adhesive layer. The adhesive is pressure-activated and is self-sealing about attaching hardware. The foam is self-setting and, in use, molds to the flange of the window unit. When installed, the foam layer is compressed between the inner window frame and rough opening and between the window flange and the wall surface adjacent the rough opening. The weatherproofing backer is designed to extend beyond the flange of the window unit and thereby receive the weatherproofing membrane thereover. The weatherproofing backer, then acts as a sealed bridge between the membrane and the window unit precluding entry of air and water. Both the foam and the adhesive have fire retardants in the formulation thereof. A tape form with a self-skinned foam layer and a sheet form, with polymeric covering web are provided.

Abstract: A structural support member for use in a roof deck system that is supported on an upper surface of a roof deck support structure. The primary embodiment comprises a substantially vertical outer segment, a substantially horizontal lower segment connected to the outer segment, a substantially horizontal upper segment connected to the outer segment, a substantially horizontal intermediate segment connected to the outer segment between the upper and lower segments, and a substantially vertical inner segment connected to the intermediate segment and the lower segment. The lower segment is secured to the upper surface of the support structure and supports a metal deck. The upper, intermediate, and outer segments form a C-shaped cavity for receiving the end of a barrier material, such as insulation or concrete, which is supported on the metal deck. The lower, intermediate, inner, and outer segments form an elongated channel that preferably has a plurality of vent holes therethrough.

Abstract: A corner flashing system is provided for sealing the corners of recessed window frames against moisture penetration. In a preferred embodiment, the system comprises first and second double-flap members, a half-cube member, and caulking. The first and second double-flap members, and the half-cube member are preferably made of asphalt or petroleum based material. In another preferred embodiment, the system comprises one double-flap member, a modified half-cube member, and caulking. In another preferred embodiment, the system comprises a single member that combines a double-flap member and a half-cube member, and caulking. In another preferred embodiment, the system comprises a combination member, a double-flap member, and caulking.

Abstract: A mortar and debris collection device for insertion into lower portions of a cavity defined between outer and inner wall structures of a masonry cavity wall employs two relatively rigid mat elements each designed to permit moisture to pass readily therethrough. Bottom edge regions of the two mat elements are hinge connected to permit the mat elements to be folded into closely overlying relationship.

Abstract: A trim member for an exterior wall cladding system of a residential or commercial building is provided. The trim member includes a nailing flange, a top flange extending perpendicularly from the top of the nailing flange, a front leg extending downwardly from the exterior end of the top flange, a vent leg projecting inwardly from the front leg, and a return leg extending upwardly toward the top flange. The vent leg may be perforated to allow the passage of air and moisture out of the trim member and oriented so that rain water cannot enter directly into the trim member. The trim member permits the wall cladding system to drain and ventilate, thereby removing unwanted water and moisture vapor or condensation from within the cladding system. The trim member may be installed on an exterior building wall beneath the soffit prior to the application of a wall cladding system.

Abstract: A flashing apparatus for external use on structures is described. The flashing apparatus essentially serves as an accessory for fiber cement siding and is designed to provide a certain level of water resistance in the seams between the ends of the sections of the siding. The flashing apparatus has a forward projecting flange and comes in various heights to accommodate different sizes of fiber cement siding that may be used in constructing a structure.

Abstract: A lap siding system for use on an exterior of a building that includes a plank having a length and a complementary member, such as corner trim, door trim, etc. The lap siding system further includes a flashing disposed between the plank and the complementary member. The plank, the complementary member, and the flashing are adapted to be coupled to an exterior of a substructure of a building. At least one of the plank, the complementary member, and the flashing is adapted to create at least one ventilation channel between the substructure of the building and at least one of the plank, the complementary member, and the flashing.

Abstract: An angular flange for reinforcing and firestopping in the annulus between a structural panel such as a wall, ceiling or floor and a duct extending therethrough. The prefabricated angular flange includes a primary angular flange leg to be secured to the duct and a secondary angular flange leg approximately perpendicularly oriented relative thereto. Each flange includes a sealing member of flexible intumescent paper positionable therealong to facilitate firestopping therebetween. The sealing member preferably including two panels at an obtuse angle with respect to one another and being flexible to become approximately perpendicular with respect to one another responsive to securement of the angular flange to the duct and the surrounding structural panel. One or more uniquely designed corner brackets can be included for mounting the adjacently positioned angular flanges with respect to one another selectively.

Abstract: A window and door head flashing assembly is fabricated at a construction site to fit specific door or window widths. A center section which may be extruded with a sloped base, a rear flange, and a front lip. End caps may be provided to snap or glue on the center section. The end caps have a perpendicular fin which serves as an end dam to block the lateral movement of water. The assembly may be inverted for use as a sill pan. The center section may be cut to a desired length and installed over arched windows or doors by bending to shape as it is installed. For arched applications, a combination of rigid and flexible PVC may be coextruded to provide a desired cross sectional profile that is flexible enough to be bent around the arch, but stiff enough to retain its cross section for drainage.