On this restricted-access windows project in Birchwood, internal making good is the first installation control and we repair or finish internal reveals, sill zones and decoration interfaces around the new frame. Kaizen Windows & Doors links waste handling to access route, frame size, lifting method, protection and installation sequence, making sure we manage removed frames, glass and packaging so working areas remain clear through the replacement sequence, with internal making good kept as the lead check for this restricted-access windows scope. We also review reveal dimensions before making good and check internal and external reveal depths so trims, plaster and handle clearances can be coordinated, with internal making good kept as the lead check for this restricted-access windows scope. Finally, internal sealing is checked so we can close the internal frame perimeter cleanly before trims or making-good work is completed, helping deliver window replacement planned around the available working and handling space, with internal making good kept as the lead check for this restricted-access windows scope.