The 10 degree roof still would nowhere be enough slope, the door has to be within approx 15 degrees of vertical for the internal counterbalance to work properly.
The rooves I did used the sectional door tracking not the actual panels. I welded up a frame and used colourbond sheeting (I was thinknig of using an old roller door curtain but I had the sheeting already). Sectional panels would be even less watertight than roller curtains!
Brett
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