What is a night latch?

A night latch, also called a rim latch, is a spring-loaded locking device that mounts directly onto the inside surface of a door leaf. When you close the door, the latch bolt springs into the strike plate on the door frame, securing the door without requiring you to turn a key from inside. This automatic action is what makes it "self-locking."

In Singapore's residential sector, night latches serve as secondary locks on HDB flats and landed properties. Owners typically pair them with a main deadbolt, using the night latch for everyday entry and exit while keeping the deadbolt engaged when at home or away for extended periods. The rim-mounted design fits onto existing doors without requiring recessing or frame modification, making installation straightforward on older or rented properties.

The mechanism consists of a spring-loaded bolt that retracts when you turn the door handle or key from inside, allowing exit without fumbling. From outside, you need a key to retract the bolt and enter. Night latches suit frequent household traffic because they reduce the need to manually lock and unlock with a key each time.

Over time, the spring mechanism can weaken, causing the latch to fail to catch properly or stick. Regular maintenance and timely replacement are important to keep your door secure. If your night latch is worn or damaged, residential locksmiths in Singapore can repair or replace it with a quality unit matched to your door type.