Thread: Box trailer weather tight door seal design - help required

I am looking to build an enclosed box trailer. It will have large gull wing doors on the rear and the two sides.
I will be building the support frame out of 40mm SHS, and the door frames most likely out of 24mm SHS, all clad with aluminum sheet.
The top hinge will be one of the continuous types with the weather seal rubber insert.

Anyone got any experience with the best way to create a weather tight door seal around the rest of the door (ie best rubber extrusion to use, does it need some other aluminum support extrusion, can the aluminum sheeting on the door be left proud of the frame and a rubber extrusion slipped over the aluminum sheeting, ???) ?