A building covered with resin films (10), comprises a frame (11) constituting the bone structure of a building and a roof and /or a wall formed by stretching transparent resin films (20) on the frame, wherein the lower edge portion of a transparent resin film is held by a retainer (30) to fix it to the frame and a water-permeable sheet (40) is put with its upper edge portion being positioned at the inner surface side of the resin film and its lower edge portion being positioned at the outside of the building whereby condensed water resulted on the surface of the film facing the inside of the building is discharged to the outside thereof without losing the heat insulation effect.
