Patent ID: 7958678

Claim:
A building assembly for providing a substantially enclosed structure which defines an interior space and an exterior space, the building assembly comprising: a frame constituting a bone structure of the building assembly; an upper resin film provided on the frame and extending along the frame to form at least part of a roof and/or wall of the building assembly, the upper resin film comprising: an inner surface side facing the interior space, an outer surface side facing the exterior space, and a lower edge portion consisting of a part of the upper resin film that extends in the direction of gravity from an intermediate point on the upper resin film to a lower edge of the upper resin film which is nearest to a ground that supports the building assembly; a lower resin film provided on the frame at a position nearer to the ground than the upper resin film and extending along the frame to form at least part of a roof and/or wall of the building assembly, the lower resin film comprising: an inner surface side facing the interior space, an outer surface side facing the exterior space, an upper edge portion consisting of a part of the lower resin film that extends against the direction of gravity from a first intermediate point on the lower resin film to an upper edge of the lower resin film which is farthest from the ground that supports the building assembly, and a lower edge portion spaced from the upper edge portion and consisting of a part of the lower resin film that extends in the direction of gravity from a second intermediate point on the lower resin film to a lower edge of the lower resin film which is nearest to the ground that supports the building assembly; a water-permeable sheet comprising: an inner surface side facing the interior space, an outer surface side facing the exterior space, an upper edge of the water permeable sheet which is farthest from the ground, and a lower edge of the water-permeable sheet which is nearest to the ground; and a retainer configured to clamp the upper resin film, the lower resin and the water permeable sheet together, wherein the retainer is provided at a position where the upper resin film and a lower resin film are overlapped so that the lower edge portion of the upper resin film is positioned at an exterior space side of the upper edge portion of the lower resin film, and the water-permeable sheet is sandwiched between the upper and lower resin films so that the upper edge of the water permeable sheet is exposed to the interior space to collect water from the interior space and the lower edge of the water permeable sheet is exposed to the exterior space to dispense the water to the exterior space such that the water permeable sheet provides a path for the water to move by capillary action from the interior space to the exterior space.