of wall edge wind spoiler 50 again in a cross sectional top view the wind spoiler uses yet another mechanism to mitigate vortex formation around a wall corner 105 of a building the raised and bent spoiler plate 52 forces the wind flow around the wall corner to conform approximately to the exterior wall surfaces and thus suppresses flow separation and vortex formation the resulting effect is the reduction of the wind suction force on the wall area downwind of the wall corner 105 a plurality of methods is suitable for supporting the raised spoiler plate to the wall corner as long as the support members do not collectively obstruct the airflow path between the raised spoiler plate and the wall corner a preferred option is to use significantly perforated longitudinally continuous plate like supports 54 as exemplified in fig5 a which provide additional effects of flow breakdown and kinetic energy dissipation as described above for edge windscreens fig6 shows an alternative configuration to form an edge wind spoiler assembly 60 the raised and bent plates 62 can be configured with multiple straight segments as shown herein or with curved ones the end segment of the raised plate shall preferably be approximately in parallel with one of the walls.