The vast majority of residential solar systems are installed on the roof. This is obviously the perfect place to install solar panels, because of its height (hence with the least amount of shade) and because very often already provides a tilt. The solar panels are installed on rails; but how are rails attached to the roof?
Over the course of the last two decades, solar attachment manufacturers have been able to create (and offer warranty on) products that integrate perfectly with any roofing type and material. This has reduced to zero the risks of installation errors that were the main cause for damage and water leaks. In fact, most manufacturers and installers now offer up to a 25-year warranty on their products and workmanship!