In-Roof Flat Panel Installation The beginning of an in-roof installation. The roof faces due south Stripping the Roof For in-roof installations the tiles are removed where the collector is to go. Collector Installation The collector, a BAXI 'Solarflo' system, sits on the roof laths and is tiled up to, much like a 'Velux' window. Collector Installed The installed collector. All the pipework is inside the roof space. Pump Station The pump station is located next to the boiler in the garage. Commissioned System The system is up and running and saving energy.