Skylight construction and method of making same

A skylight construction and method of making same are provided wherein such construction comprises, a support, an outer sheet made of a light-transmitting material and having a peripheral portion adjoining the support, and an inner structure made of a light-transmitting material and having a peripheral edge portion attached to the support defining a first air space between the outer sheet and the structure with the inner structure comprising a pair of inner sheets each made of a light-transmitting material and with the inner sheets being held in spaced relation defining a second air space therebetween such that the sheets and first and second air spaces enable provision of the skylight construction having minimum weight yet providing minimum heat loss in winter and minimum heat gain in summer.