For top-hung windows in Stockport, the technical sequence begins with gaskets, so we check glazing and sash seals for continuous seating before final handover, with gaskets kept as the lead check for this top-hung windows scope. We then use final checks to coordinate head clearance, hinge line, handle reach, restrictors and weather seals, and we open, close, lock and inspect each installed window before the work is handed over, with gaskets kept as the lead check for this top-hung windows scope. Before closure, sill level is reviewed and we coordinate the frame base with the internal sill or window board and the external weathering detail, with gaskets kept as the lead check for this top-hung windows scope. The handover also covers perimeter sealing; we form a continuous weather-resistant seal around the external frame perimeter. Together these checks support top-hung windows configured around ventilation and practical operation.