Abstract: A system for collecting solar heat energy includes a plurality of shingle members arranged in shingle fashion on the roof of a stucture or building. Each shingle member is formed of a web of waterproof material which is folded and seamed to define a flat, water-containing cavity therein. Each shingle member includes a flange extending on at least two sides thereof for securing the shingle member to the sub-roof by nails or the like. At least one fluid inlet coupling and fluid outlet coupling is secured to the shingle member in flow communication with the cavity. The fluid coupling members are disposed so that the shingle members may be partially overlapped and connected in open flow communication to the superjacent and subjacent shingle members.