On this single-window replacement project in Croston, frame alignment is the first installation control and we check the frame for line, level and square before glazing and final tightening. Kaizen Windows & Doors links glass specification to existing opening, reveals, sill, external finish and internal making good, making sure we match glazing type and pane configuration to the intended room use and project specification, with frame alignment kept as the lead check for this single-window replacement scope. We also review internal making good before making good and repair or finish internal reveals, sill zones and decoration interfaces around the new frame, with frame alignment kept as the lead check for this single-window replacement scope. Finally, waste handling is checked so we can manage removed frames, glass and packaging so working areas remain clear through the replacement sequence, helping deliver a focused replacement with the new frame integrated cleanly into the existing opening, with frame alignment kept as the lead check for this single-window replacement scope.