Yes, solar panels can be installed on an older roof, but it's essential to ensure that the roof is structurally sound and in good condition before installation.
Before installing solar panels on an older roof, a professional contractor should assess the roof's condition and determine if any repairs or maintenance are necessary. The roof should be able to support the weight of the solar panels and withstand the added stress from wind and weather.
If the roof needs repairs or maintenance, it's recommended to complete those tasks before installing solar panels to avoid any issues with the installation or the long-term performance of the panels. Additionally, the type of roofing material used may affect the installation process, so it's important to consider this when planning for solar panel installation.