Welcome to this installment of SPW Classroom on Roof-Mount Systems.
Solar panels can't do their jobs of making energy if they aren't successfully secured to a roof, whether it is sloped or flat. Roof-mounts can use rails, be rail-less and even depend on ballast, but they all must clamp to solar panels in some way.
Here you will find resources describing the various types of racking and mounting systems used on rooftops. These tutorials are all designed to give you a better understanding of this important mechanical component of solar arrays.