Bolts penetrate rafters. All penetrations sealed. Neoprene washers installed. Will withstand 100 MPH winds. Bottom of collector is 2 feet above ground.
Footings extend below frost line.
Proper valves are used throughout the system. Backflow preventer on potable water supply when necessary. No direct connection between potable line and waste line. Necessary Valves and pipes clearly labeled. System fully protected against excess pressure and temperature.