Roof flashing assembly

A roof flashing assembly for sealing between an upper roof surface of a roof structure and an elongate member of substantially constant cross-section axially extending substantially vertically upwardly above said roof surface to a projecting end of said elongate member, said assembly comprising, in combination:

• a body member, comprising
• an annular base portion adapted to be rigidly sealingly mountable upon said roof surface in surrounding relating to said elongate member;
• and
• an annular boss portion axially extending from said base portion to an upper end of the boss portion, said boss portion having an inner boss surface, which inner boss surface defines a substantially cylindrical passageway extending through the boss portion, which passageway is adapted to receive therethrough said elongate member when the base portion is operatively mounted upon said roof surface;
• means for directing moisture away from a first end of a gap defined between an outer perimeter surface of said elongate member and the inner boss surface, at a location axially spaced from the base portion, when the base portion is operatively mounted upon said roof surface;
• and
• a sealing means for resiliently sealing from moisture a second end of said gap at a location axially adjacent to the base portion, when the base portion is operatively mounted upon said roof surface, wherein the sealing means is an annular resilient gasket, having a substantially flat lower surface, with an inner perimeter and an outer perimeter thereof, and having circumferentially extending first, second and third upper surface contours, with
• the first contour defining a sealing surface which commences at the inner perimeter of the lower surface, and extends therefrom in an upwardly directed arc, first inwardly, thence outwardly, to a first terminus, which sealing surface is adapted to resiliently sealingly contact against said outer perimeter surface of said elongate member at said location axially adjacent said base portion, when the base portion is operatively mounted upon said roof surface,
• the second contour defining a concave body portion of the resilient gasket which commences at the first terminus, extends therefrom, initially, radially outwardly, thence, in an upwardly and outwardly directed arc, to a second terminus, and
• the third contour defining a mounting surface, commencing at the second terminus and extending in a downwardly and outwardly directed arc to the outer perimeter, which mounting surface is rigidly sealingly mounted to said inner boss surface.