Asphalt shingles, the most common roofing material in the U.S., are relatively simple to work with, making installation quick and easy. Solar panel installers can easily attach mounting brackets to the shingles, ensuring a tight and secure fit. Metal roofs, in contrast, though long-lasting and energy-efficient, present a different set of challenges. Because metal roofs often feature interlocking panels, the installer needs to carefully align and secure the solar panel mounting system. Special hardware, such as flashing and penetrating mounts, is used to prevent leaks and ensure that the panels stay securely in place, especially during high winds or heavy rain.