Stiff sash lock on a dense Victorian brick terraced houses in mill-worker row
Common on dense Victorian brick terraced houses in mill-worker rows across Bolton — the timber door has moved seasonally and the mortice case has bound against the keep. We often see this coupled with mortice lock failures on Victorian mill-worker brick terraces with damp-affected door 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.