Abstract: Aspects of the disclosure relate to a drain assembly that incudes first and second plates, moisture inlet and outlet, a flexible sheet disposed between the first and second plates and extending between the moisture inlet and outlet. The flexible sheet is configured to wick moisture. The drain assembly is configured to position in an opening in a building envelope assembly, seal between the moisture inlet and the moisture outlet adjacent the flexible sheet, and transport moisture from the moisture inlet to the moisture outlet to transport moisture from an interior side of an envelope penetrating component positioned within the opening to an exterior side of a water separation plane.

Abstract: Aspects of the disclosure relate to building envelope assemblies including a structural wall frame, a water separation plane on an exterior side of the structural wall frame, an opening in the building envelope assembly and an envelope penetrating component positioned within the opening and secured to the structural wall frame. Additional aspects relate to a drain assembly that can be provided as part of the building envelope assembly or provided separately. The drain assembly incudes first and second plates, moisture inlet and outlet, a flexible sheet disposed between the first and second plates and extending between the moisture inlet and outlet and at least one seal formed between the moisture inlet and outlet, each seal adjacent the flexible sheet. The drain assembly is configured to transport moisture from the moisture inlet to the moisture outlet.

Abstract: A building envelope assembly including a first structural wall frame, a flexible sheet, a drain assembly, and a seal. The flexible sheet is disposed along a surface of the first structural wall frame. The flexible sheet configured to transport moisture along two opposing surfaces. The flexible sheet includes an upper portion and a bottom portion having a moisture wicking sheet. The drain assembly is configured to receive moisture from the flexible sheet. The seal is attached to the bottom portion of the flexible sheet and is configured to prevent ingress of water, water vapor, and air toward the upper portion of the flexible sheet.

Abstract: A building envelope assembly including a first structural wall frame, a flexible sheet, a drain assembly, and a seal. The flexible sheet is disposed along a surface of the first structural wall frame. The flexible sheet configured to transport moisture along two opposing surfaces. The flexible sheet includes an upper portion and a bottom portion having a moisture wicking sheet. The drain assembly is configured to receive moisture from the flexible sheet. The seal is attached to the bottom portion of the flexible sheet and is configured to prevent ingress of water, water vapor, and air toward the upper portion of the flexible sheet.

Abstract: A method removes moisture from a wall assembly including a supporting wall, an interior finishing layer attached to an interior side of the supporting wall, and an exterior layer disposed opposite the interior finishing layer. The supporting wall supports the interior finishing layer and exterior layer. The method includes sealing, with a moisture seal located between a base of the wall assembly and the supporting wall erected on the base, and providing a water separation plane disposed within the supporting wall so that the water separation plane is located between the interior finishing layer and the exterior layer. The water separation plane provides a substantial barrier to moisture vapor and bulk water. The method includes transporting moisture along an interior side and an opposing exterior side of the water separation plane to a moisture collection area outside of the wall assembly, and removing the moisture from the moisture collection area.

Abstract: A building envelope assembly including a first structural wall frame, a flexible sheet, a drain assembly, and a seal. The flexible sheet is disposed along a surface of the first structural wall frame. The flexible sheet configured to transport moisture along two opposing surfaces. The flexible sheet includes an upper portion and a bottom portion having a moisture wicking sheet. The drain assembly is configured to receive moisture from the flexible sheet. The seal is attached to the bottom portion of the flexible sheet and is configured to prevent ingress of water, water vapor, and air toward the upper portion of the flexible sheet.

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: 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.