New stepped valley constructed in timber and according with best practice. Ready for lining.
With the tapered gutter, the pitched roof merges into the sole of the gutter without upstands. Thus, according to the fall of the gutter and the pitch of the roof, the gutter is wider at its highest point than at its lowest, the lower the pitch the more the gutter widens.*
*from Lead Sheet in Building published by the LDA 1978