For this side-hung windows project in Walton, opening checks, frame fitting and finishing are treated as one sequence. Opening Survey leads the review, so we check the existing opening, frame position and surrounding finishes before final dimensions are confirmed, with opening survey kept as the lead check for this side-hung windows scope. We use fixing points and internal sealing around hinge side, handle reach, opening clearance, locking points and reveal depth, ensuring we position frame fixings to suit the opening, frame profile and surrounding substrate and close the internal frame perimeter cleanly before trims or making-good work is completed, with opening survey kept as the lead check for this side-hung windows scope. The last technical check is handle positions; we check handle height and access against the room layout and opening style. This supports side-hung windows with operation planned around the adjoining room.