Hi Dennis,
just an alternative idea I had looking at the two supports I had in the shed.
Indeed I had thought of your suggestion also and may still go that way as I can build another structure in this otherwise dead space using these wooden up rights. Pricing Works out the same by the time timber is added. I will need at least 4.
I’d also like to motorise the roll off roof with sliding gate rack and pinion mechanism. Any recommendations for a particular unit also wheels and track system. Roof is 4.2 x 3.6 m.