Abstract: A roofing member for collecting solar energy defines an external shape and has dimensions similar to traditional roofing means such as tiles or slates. The roofing member comprises at least one transparent wall with a closed cavity below this wall, and a dark area in contact with the cavity below said wall. First and second complementary connecting means are located respectively in an area of a side of the member intended to be placed at an upper level and in an area of a side of the member intended to be placed at a lower level. In this way a mechanical connection can be made simultaneously between the first complementary connecting means of a second similar member superimposed by the said area of the side intended to be lowermost and the second complementary connecting means of the member simultaneous therewith a sealed interconnection of the respective cavities of these two members can be made in order to allow the circulation of a heat-carrying fluid from one member to the other.