It's reasonably common with cantilevered carport/patio roofs.
Like I've got, and will need to take down to get access to the wall above, and which might not survive, which is why I want to see if I can find a supplier of just the sheeting
Yo - I'm pretty sure that that's who we bought ours from.
The problem with them is that they are only interested in selling and installing new canopies, not in doing anything to help existing owners do things to them.
One alternative is to use a hybrid framing of your own cantilever sections coupled with some timber supports and revert to a polycarb roof with glazing bars, a wall starter, ends, eaves etc.
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