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Casement windows—with hinged sashes that swing free and clear of the opening—can be relatively small and still meet egress requirements. This makes them ideal for basement egress and for other areas where space is limited. The overall size of this "smallest" egress casement window is 8 sq. ft.
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Double-hung windows—with vertically sliding sashes that always fill more than one-half the opening area—have to be pretty big to meet egress requirements. The overall size of this "smallest" double-hung egress window is 14.85 sq. ft., almost twice the area of the egress casement window shown.
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Gliding windows—with horizontally sliding sashes that always fill half the possible window opening area—also have to be big to meet egress requirements. The overall size of this "smallest" gliding egress window is 15.5 sq. ft., almost twice the area of the egress casement window shown.
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Awning windows are problematic. Since the opened sash prevents escape from most window wells, they’re unsuitable for basement egress. And with most awning windows, the opening hardware and height don’t meet egress requirements. Some manufacturers offer models with detachable operators that meet egress requirements.
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