the soffit is attached to the trusses without proper support, bent in the of an arch.

anthracite arch attached base batten beam beams bent board boards casing ceiling construction contemporary convex cornice eaves exterior fascias frame gable guides home house lattice material outdoor pcv pendent plank proper pvc roof roofer roofing scaffolding shape sheet soffit starting strap strip support timber trim truss trusses unsupported vinyl wood wooden