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I did.
Mine was a standard colorbond garden shed with double sliding doors.
It was about 2.4 x 1.8 or something like that.
The first thing I did was to line the inside edges of the shed with 75 x35mm pine to create a timber frame on all sides.
I fixed the pine on the floor to the slab (it was on a concrete slab) with anchor bolts.
The top 2 main beams I got were 6 metres. I created a rolloff roof frame by cutting a little square in the corner of the shed and running the 6 metre beams out past the shed. I then had a couple of vertical support beams to suppor the roll off structure. I fixed a 50 x 25 batten to both sides of this roll off top beam so a roller wheel would roll on it without falling off.
So that was the frame.
The roof I added a stiffening timber underneath (it needs to be packed out to be horizontal as the roof is sloped) and rollers to that. I made it into a truss ( a triangle) otherwise the roof will collapse when rolled off.
I may have photos somewhere of the final thing.
I used latches to lock the roof down after it was shut and also to prevent it blowing off. It never blew off and it did not leak and the rolling action was very smooth and quiet as my neighbours bedroom were fairly close by.
Greg.
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