Today I aimed to install the last small section of roofing as well as the ridge capping.
I managed to complete both.
On the good news front, after jury rigging the last few pieces of sheet in to position, several days ago, I had no leaks at all down in the garage area - I'm very pleased about that.
Basically I had to install 4 small rafters (bolted to the centre form at one end, coach screwed to the existing rafters at the other) and then some battens. Finally I had to fix down the 1.4 metre sheeting lengths I prepared about 6 weeks ago.
Fixing the ridge cap was unknown territory but I remember Ian H telling me you had to squash them down as flat as possible before fixing them off.
I applied a lot of tek screws and silastic - going to be tricky getting it undone later.
Once the ridge capping was installed I was able to remove all sorts of black plastic and oddments from off the roof so left it quite tidy by the end of the day.