Unit skylight system

A method for installing a unit skylight on a roof, the roof having a structural curb bounding an aperture for admitting light into a building interior, the curb having a top surface and an outer side, the method comprising:

• securing a mounting frame to a unitary light transmitting lens by
• inserting a lower attachment lip of said lens into a channel of a U-shaped portion of said mounting frame, said lower attachment lip extending outwardly from the lower edge of a skirt panel, said skirt panel depending downwardly and extending outwardly from a horizontal support flange, said support flange extending outwardly from a main lens body of said lens, said channel defined by an upper hold-down flange of said mounting frame and a lower flange thereof disposed parallel to said upper flange,
• applying a water resistant seal between said lower flange and said lower attachment lip,
• positioning said support flange onto the top surface of the curb such that said skirt panel and said lower attachment lip extend outwardly from and below the top surface of the curb, and
• attaching said mounting frame to the curb thereby securing said lens on the curb.

A unit skylighting system for mounting a unit skylight on a roof having a structural curb bounding an aperture for admitting light into a building interior, the curb having a top surface and an outer side, the unit skylighting system comprising:

• a unitary light transmitting lens having a main lens body, a horizontal support flange extending outwardly from said main lens body, a downwardly depending skirt panel extending outwardly from said support flange, and a lower attachment lip, said support flange resting directly on the top surface of the curb such that said main lens body spans the full aperture, said support flange including an outer portion that extends outwardly beyond the outer side of the curb, said skirt panel having a lower edge spaced from the outer side of the curb, said lower attachment lip extending outwardly from said lower edge, and
• a mounting frame including a U-shaped portion having an upper hold-down flange, a lower flange, a channel defined by said upper and lower flanges, and an attachment collar depending downwardly from said lower flange and spaced from the outer side of the curb, said lower attachment lip of said lens received in said channel,
• an unobstructed downwardly-facing opening defined by said support flange, said skirt panel, said attachment collar, and the curb, said opening for accommodating roofing material applied to the curb, and
• threaded fasteners attaching said attachment collar to the curb below the top surface thereof, tightening said fasteners driving said attachment collar toward and securing said attachment collar to the curb thereby urging the U-shaped portion of said mounting frame onto said lower attachment lip and holding said lens onto the top surface of the curb.