Kit of cross-compatible parts for multiple solar installation methods

A method for selecting and mounting solar components, the method comprising:

• selecting a first panel mounting configuration from a plurality of panel mounting configurations, the plurality of panel mounting configurations including at least a dual-rail panel mounting configuration, a shared-rail panel mounting configuration and a rail-free panel mounting configuration;
• arranging a plurality of flashings on a roof surface according to the first panel mounting configuration, the flashings each having an aperture through a raised portion;
• selecting, based on the first panel mounting configuration, a first mounting fixture from at least an L-foot or a flex-mount, wherein the L-foot is used with either the dual-rail panel mounting configuration or the shared-rail panel mounting configuration, and the flex-mount is used with the rail-free panel mounting configuration;
• attaching a plurality of the first mounting fixtures to the roof surface using at least fasteners that pass through the apertures of the flashings;
• and
• attaching a plurality of solar modules, wherein a first component combination including at least the flashing, the first mounting fixture and the solar module is certified and listed according to a recognized standard, the recognized standard one of at least CE for the European Union, EESS for Australia, ETL for the United States, CSA for the United States or UL for the United States.