OPENING CONSTRUCTION OF BUILDING AND CONSTRUCTION METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide an opening construction for a building having excellent waterproofing and water draining functions and good workability regardless of the presence of absence of the pent roof. SOLUTION: The opening construction of this building is made by providing an opening frame 3 to be attached to the edge portion of an rectangular opening 2 of an outer wall 1 in a watertight state with respect to the edge portion of the opening 2 and is provided freely detachably with the pent roof overhung the outdoor side to the opening.