They did overall very good work. The installers broke some tiles on my roof and tried to glue them together without telling me. it took them forever to get them back out to repair that issue but overall it looks great and they did good work. I had some pigeon problems that were messing with the wires so that was done before the netting was put around the panels. They should have disclosed that they broke some tiles but the installation of the panels is great and secure. So far it looks good on our energy bill.