Deadlocking Cylinder Nightlatches

A front door that won’t latch properly, a tired nightlatch that’s become unreliable, or a lock that gives too much control to anyone on the outside is a problem worth sorting quickly. A deadlocking cylinder nightlatch gives you the everyday convenience of a rim latch with the option to secure it properly once the door is shut.

These locks are commonly fitted to timber front doors and are a familiar choice for homes, flats and rental properties. When deadlocked, the latch cannot simply be slipped back from outside, adding a useful layer of protection to an external door. Depending on the model, deadlocking is operated by the snib on the case or by turning the key, while the snib can also hold the latch back when you need the door to stay open.

If you are replacing a broken front door nightlatch, check the case size, backset, cylinder type and handed operation before ordering. Matching the existing fitting can save time on site and avoid unnecessary drilling or alterations to the door. This range includes replacement deadlocking nightlatches from Asec, ERA, Legge, Union and Yale, in different finishes and sizes to suit common installations.

For a straightforward replacement cylinder nightlatch for a timber front door, or an upgrade where a basic rim latch no longer feels secure enough, choose a lock with the right dimensions and deadlocking method for the door. If the door also needs higher levels of security or must meet a particular insurer’s specification, check the full locking arrangement rather than relying on the nightlatch alone; requirements for 5-lever deadlocks that meet insurance requirements are normally assessed separately.