rails 23 each rail 23 has a generally inverted t shape including an upstanding flange 25 and a flat base 27 ballast such as bricks 29 rest upon base 27 to hold each rail 23 upon roof 21 without piercing the roof by screws or the like rails 23 are preferably pultruded and resinated long strand fiberglass which advantageously does not require electrical grounding avoids corrosion and is light weight alternately the rails can be aluminum steel or other materials although various advantages will not be realized auxiliary roof components preferably multiple photovoltaic or solar panels 31 are secured to flanges 25 by way of multiple securing systems 33 each solar panel 31 includes metal and glass sheets with silicon wafers preferably without peripherally surrounding mounting frames referring to fig3 4 and 5 each securing system 33 includes a roof clamp 41 a catch or fastening bracket 43 and hinge brackets 45 each roof clamp 41 is attached to flange 25 of rail 23 each roof clamp 41 includes a saddle 51 a flange engaging wedge 53 and an elongated shaft or securing member 55 a generally c shaped leaf spring not shown has pins at one end attached to holes in saddle 51 and is trapped between a head of shaft 55 and wedge 53 at the other end the spring serves to retain wedge 53 to saddle 51 in a pre assembled state prior to flange installation while also biasing wedge 53 into a clamping position toward a top wall of saddle 51 and flange 25 thus camming action of flange.