A vacuum insulating material providing assembly, which can be used to provide the vacuum insulating material to the interior corners, exterior corners and/or window edge portions of a building, includes corner members positioned at the interior corners, exterior corners or window edges of the building, wherein the corner member has: a base plate; a first cantilever plate extending from one end of the base plate in the vertical direction; and a second cantilever plate extending from the base plate in the direction parallel to the first cantilever plate.