US Patent 8661747 Solar panel racking system

A racking system for photovoltaic solar panels greatly reduces material, weight, labor and system profile as compared to previous mounting systems. Special pedestals are secured to a roof at far larger spacings and fewer number than required in previous systems. The pedestals are configured for efficient and dependable flashing for waterproofing the roof. In assembly the extruded aluminum components are fitted together quickly with efficient and strong connections, with the photovoltaic panels retained in a compact array and fully supported along the length of each panel. The fittings provide for field adjustment of the height of the uprights, helping accommodate uneven roof surfaces, such as flat roofs.