by Hans Efde » Sun Dec 13, 2015 8:28 pm
My roadster is watertight since the beginning. The roadster has longer doorcards so leakage via the doors is no issue. The softtop is perfect as well, just a bit of drizzle at to top of the windows at speed and in a corner of the front windscreen (professionally fitted, even these guys don't get it right the first time). Parked the car stays dry.
The coupe has bigger problems, with the doors and the sunroof as well. The sunroof can cause problems because the curvature of the glass differs from the radius of the roof. On a steel car the thin roof will follow the frame, but on a Midas the roof does nothing. So the sunroof is under constant stress and the seal squeeze varies around the frame. The only way to solve this is to find a sunroof with the same curve a the Midas roof (or use lots of sealant between the frame and the roof).