Stiff sash lock on a Georgian townhouse
Common on Georgian townhouses across Beverley — 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 deadbolts on Georgian and Victorian timber doors. 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.