Sitting up on the rocks next to the sea, Taigh Na Traigh is the last house in the settlement of Mannal, on Tiree. It inhabits the remains of a byre, one of a cluster of agricultural ruins on the site. For the main living space, we copied the form of the original building in a bespoke tarred timber kit, lifted up, replaced with glass below and slid beyond the boundary wall to look out across the waves. In contrast, the bedroom wing next-door uses a material language local to Tiree: white harling with a red corrugated bitumen roof.