Even less visible progress.
The tongue and groove boards that should have gone up in an hour are mis-shaped. the tongue has a dead square front edge and will not slide into the groove. I will have to champfer every leading edge. Over a 150 metres of sanding before I can move on.
Then the roof tiles arrived, but the lorry's crane wouldnt work to lift the pallet off. Fixed after 45 minutes.

Then THREE separate lots of visitors, followed by a trip to the woodyard to buy battening for the tiles. Day done. Total forward progress, the rafters are all squared off.