The roof to sidewall joint is broken right above the leak area.
Roof to sidewall joint sealing.
A metal roof is engineered to last decades sealing out water and wind and easily shedding snow.
Looking at the awming mount and the roof to sidewall joint.
Watertightness is achieved through positive integration with the roofing membrane and a purpose designed system for transitioning between the joint in the roof and joints in walls.
More questonable or ugly roof wall flashing examples.
The roofing longevity will always depend on the type of the metal roof installed and on the quality of the installation but metal roofs can last for more than 60 years.
I have the service tip on roof to sidewall joint.
Used to seal roof to sidewall joint previously the silicone needs to be thoroughly removed so the urethane will adhere to fiberglass and aluminum trim.
I also have the sealant callout sheet for my unit.
For units with over the fibergass roof skin awning rail.
I have searched and read about this.
Below we illustrate that using a single piece of metal flashing where the uppermost edge of a shed roof abuts a vertical building sidewall works fine though the use of exposed nails see our photo below may form leak or wear points in the roof.
It is designed to resist hail mold mildew rodents and other animals.