Roofing system with modular tiles

1. A roofing system for forming a roof, the roofing system comprising:

a plurality of tiles, each tile having a frame at a perimeter of the tile, the frame comprised of an upstream element, an opposed downstream element, and opposed first and second side elements, cooperating to bound a central panel area which is open;

the first side element has an upstanding groove and the second side element has a complemental downturned tongue configured to snugly fit into the groove and define a primary channel under the tongue for carrying water toward the downstream element;

each of the upstream, downstream, and first and second side elements includes a flange projecting laterally into the central panel area, said flanges each including a lateral projection and an upstanding lip and together cooperating to form a secondary channel extending continuously around and inboard of the perimeter;

wherein the secondary channel is inboard of the primary channel;

a photovoltaic panel carried in each tile, the photovoltaic panel supported by the flanges such that, when the photovoltaic panel is carried in the tile, the photovoltaic panel is snugly fit within the frame and overlies the flanges but allows water to flow over the photovoltaic panel and into the secondary channel each of the upstream, downstream, and first and second side elements;

at least one each of a side trim, a batten, and a ridge cap; and

when the tiles, side trim, batten, and ridge cap are arranged to form a roof, the batten is secured at a lower edge of the roof and directed upward to receive the tiles at the lower edge, the side trim is secured at a side edge of the roof and directed laterally to receive one of the first and second side elements of the tiles at the side edge, and the ridge cap is secured at a ridge of the roof and directed downward to lap over the upstream elements of the tiles at the ridge.

2. The roofing system of claim 1 , wherein the photovoltaic panel is carried in the central panel area of the tile for removable replacement therefrom.

3. The roofing system of claim 2 , further comprising clamps between the downstream element and each of the first and second side elements, wherein the clamps hold the photovoltaic panel against the frame in the central panel area.

4. The roofing system of claim 1 , further comprising diagonal spars extending across the central panel area from corners between the upstream, downstream, and first and second side elements.

5. The roofing system of claim 1 , wherein the flanges along the first and second side elements are each registered with an outlet of the continuous channel disposed between the downstream element and each of the first and second side elements, respectively.

6. The roofing system of claim 1 , further comprising risers on an underside of each tile, wherein the risers have heights, and the heights of the risers proximate the downstream element are greater than the heights of the risers proximate the upstream element.

7. The roofing system of claim 1 , further comprising latches projecting forwardly from underneath the downstream element, the latches corresponding in height to the upstream element.

8. The roofing system of claim 1 , wherein the upstream and downstream elements have coextensive widths, such that when the roof is formed, the downstream element of one of the tiles laps over both the upstream element and a photovoltaic panel of another of the tiles below the one of the tiles.

9. A roofing system for forming a roof, the roofing system comprising:

a plurality of tiles, each tile having a frame at a perimeter of the tile, the frame comprised of an upstream element, an opposed downstream element, and opposed first and second side elements, cooperating to bound a central panel area;

the first side element has an upstanding groove and the second side element has a complemental downturned tongue configured to snugly fit into the groove and define a primary channel under the tongue for carrying water toward the downstream element;

each of the upstream, downstream, and first and second side elements includes a flange projecting laterally into the central panel area, the flanges of each including a lateral projection and an upstanding lip and cooperating to form a secondary channel extending continuously around and inboard of the perimeter;

wherein the flanges along the first and second side elements are each registered with an outlet of the continuous channel formed by and disposed between the downstream element and each of the first and second side elements, respectively;

wherein the secondary channel;

at least one each of a side trim, a batten, and a ridge cap; and

when the tiles, side trim, batten, and ridge cap are arranged to form a roof, the batten is secured at a lower edge of the roof and directed upward to receive the tiles at the lower edge, the side trim is secured at a side edge of the roof and directed laterally to receive one of the first and second side elements of the tiles at the side edge, and the ridge cap is secured at a ridge of the roof and directed downward to lap over the upstream elements of the tiles at the ridge.

10. The roofing system of claim 9 , further comprising diagonal spars extending across the central panel area from corners between the upstream, downstream, and first and second side elements.

11. The roofing system of claim 9 , further comprising risers on an underside of each tile, wherein the risers have heights, and the heights of the risers proximate the downstream element are greater than the heights of the risers proximate the upstream element.

12. The roofing system of claim 9 , further comprising latches projecting forwardly from underneath the downstream element, the latches corresponding in height to the upstream element.