The flat roof solar panel installation provides flexibility in tilting and orienting solar panels on the roof. For this reason, the flat roof solar panel installation is one of the easier installations. It is the most common on commercial buildings.
These are the three most common mounting options for flat roof installations:
- Ballasted Mount
- Mechanically Attached
- Hybrid Mount
A ballasted mount is when weights called ballasts are used to hold solar panels down to the roof instead of bolting them down. An advantage of a ballasted system is that it does not penetrate the roof. However, a ballasted system can only work for large systems in low-wind zones.
A mechanically attached system is one that is mounted to the posts secured in the roof beams. There is special roof leak protection added to each penetration to prevent any leakage. Mechanically attached systems work for any size systems and can even hold in windy zones.
A hybrid mount also known as a minimally attached system uses a combination of the ballasted system design and mechanical attachments. This creates a system that has minimal roofing penetrations and security in windy areas.