For this contemporary windows project in Beeston, opening checks, frame fitting and finishing are treated as one sequence. Gaskets leads the review, so we check glazing and sash seals for continuous seating before final handover. We use final checks and sill level around mullion positions, frame proportions, fixed and opening panes, glass size and finish, ensuring we open, close, lock and inspect each installed window before the work is handed over and 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 contemporary windows scope. The last technical check is glass specification; we match glazing type and pane configuration to the intended room use and project specification, with gaskets kept as the lead check for this contemporary windows scope. This supports a cleaner window composition with frame divisions planned around the elevation.