Ric had covered the west side of the east wing roof with sarking, to allow him to tie in the first 8 north wing trusses, using the joining kit provided by Stevenson & Kelly. He started boarding the east side and got about halfway up the east side before he moved on to building up windows on the walls of the north wing. He had not left gaps in the boards to use as footholds, so we dragged out a bay of scaffolding and our two roof ladders.
We started at the south end, working upwards with groups of four boards making sure the ends of the boards got nailed in to different trusses. We picked up Ric’s hot tip and used the blades of mortar trowels to form the 2mm gaps we needed between boards, then nailed down the top 3 boards. We pulled out the bottom, loose, one and gave ourselves a footrest to work up the next set of boards. As we got to the ridge of the roof, we nailed all the boards down, including a full width one at the ridge. This left a gap below that was less than a boards-width, we sawed a board to size and nailed it in. Then we worked down the roof, nailing boards into the gaps we had left.
We worked our way along the roof until we got close to the north end of the roof and cut the boards so that they stuck out over the gable-end blockwork and a bit over the parapet. We can trim them up when we build up the parapet and re-lay the stonework.