Is that all? The ladder is back so I'd better get up there and check!
Lifting the barn roof is at the tricky stage: one side supported on acrows and the other on 5 day old brickwork. I have taken the precaution of fitting a couple of 4" x 2" struts and strapping the wall plate to a sound part of the old wall.
Ah. One of the two parallel flues is sealed off. Probably with slate and no vents. Must get the barn done first.
regards