Stiff sash lock on a Victorian red-brick brewery-worker terrace
Common on Victorian red-brick brewery-worker terraces across Burton upon Trent — the timber door has moved seasonally and the mortice case has bound against the keep. We often see this coupled with worn 5-lever mortice deadlock on Victorian brewery-worker terrace doors with century-old frames. The fix is either service (lubricate and adjust) or replace with a BS3621 equivalent if the existing lock is pre-standard.
Our approach Service first if the mechanism is sound; BS3621 upgrade if the existing lock is sub-standard or worn beyond service.