The Ontario Building Code | Extension of Flashing Extension of Flashing

(1) When installed beneath jointed masonry window sills and jointed masonry copings or over the heads of openings="" title ="Window installer in Toronto">openings, flashing shall extend from the front edge of the masonry up behind the sill or lintel.

(2) A flashing may be omitted when the masonry at the sill of a wall opening or the top of a wall is protected by an impervious non-jointed masonry coping that conforms to Article