Abstract: A skylight with sealing gasket and a gasket are provided. The skylight includes a frame with an inner side surface that faces an outer surface of a curb when installed, defining a first gap therebetween. A bottom surface of the frame faces an upper top surface of the curb when installed, defining a second gap therebetween. At least one light transmitting section is disposed within the frame. The gasket includes a main body portion disposable to contact the upper top surface of the curb and the bottom surface of the light transmitting section. The gasket also includes a first arm extending from the main body portion. The first arm is contactable with the inner side surface of the frame in order to seal the first gap.