Abstract: This invention relates to improvements in such outer walls and roofs as are subjected to rain and moisture and comprise an inner set of metal sections (1A, 1B), which support mutually adjacent glass panels (2, 3) held to the inner sections (1A, 1B) by means of metallic cover strips (4A, 4B). These strips which are screwed into said inner sections (1) frame the panels and form junction or intersection points between themselves. To eliminate the leakage through the roof or wall to the greatest possible extent said inner sections (1A, 1B) are, at least within the area of the holding screws of the cover strips (4A, 4B), covered by at least one layer of a possibly fabric-reinforced foil (11, 12) of rubber, plastic or a similar ductile and tight material.