The full materials list, in order of what people forget
Panels first, obviously. Then ridge cap along the peak, and inside and outside foam closures — the closures are the single most under-ordered item in this trade. Eave trim and rake trim at the edges. J-channel where panels terminate against a wall. Gable trim. Screws, sized to your purlin spacing and ideally colour-matched. Pipe boots for any penetration. Butyl tape where laps need sealing.
